Unit Plan + 3 Lesson Plans

EDCP 342A Unit planning: Rationale and overview for planning a 3 to 4 week unit of work in secondary school mathematics

Your name:                             Jun Hwang

School, grade & course:          Mulgrave School, grade 10 & Foundations of Mathematics
and Pre-Calculus/IB Math 10

Topic of unit:                           Translating real-world problems into Linear Equations and
Systematic approach to solve them.

Preplanning questions:

Why do we teach this unit to secondary school students? (150 words)

(1)  Why is this topic included in the curriculum?
-       The topic is included in the curriculum because it allows us to solve not only what we consider ‘rigid’ and ‘mathematical’ problems but also many others such as in human interactions and social justice. Yet, there are limits in merely using linear equations in certain contexts hence by having included the topic in the curriculum, students obtain an opportunity to discuss the limits of linear equations in solving problems that arise in the real world.

(2)  Why is it important that students learn it?
-       The answer ties into (1), and that is because students only focus on solving problems especially when the problems are posed in the math classroom. Prior to assuring and understanding the need for problem solving, students may not be aware where linear equations arise in real contexts. It is the teacher’s responsibility to open up to the new realm of mathematics, that is showing them the role translation plays in problem solving in general.

(3)  What learning do you hope they will take with them from this?
-       To be malleable, flexible and being able to communicate with peers when solving linear equations rather than focusing on the procedural steps to solve them.

(4)  What is intrinsically interesting, useful, beautiful about this topic?
-       What is embedded in the topic is that having to read a literature in a different context (other than mathematics) brings students with mixture of confusion and uneasiness especially when the text is not directly translatable to mathematical equation. Hence, rather than bringing teachers’ problems onto the students’ table, let us judge collaboratively whether some texts are translatable and why some don’t in the context of linear equations.


A mathematics project connected to this unit (250 words)

(1)  Plan and describe a student mathematics project that will form part of this unit.
-       Math project, called ‘Drawing Birch Bark Canoes’, will display a large graph paper with numerous linear equations on the side. Each student will graph each linear equation on the side, and soon discover that the final shape of every linear equation put together forms the 3D shape of a birch bark canoe, which was the principal means of water transportation for Indigenous peoples of the Eastern Woodlands, and later voyageurs, who used it extensively in the fur trade in Canada.

(2)  Describe the topic, aims, process and timing
-       The topic of the math project is about the indigenous perspectives and cultures. The architectural design of the canoe was exceptional for generating a great speed and elegance. Samuel de Champlain remarked that it was ‘the only craft suitable’ for navigation in Canada. Artist and author Edwin Tappan Adney asserts that the birch bark canoe was so superior that it was adopted almost without exception in Canada. The process of the canoe drawing will take longer than 1 week because it needs architectural layout through linear graphs, coloring, and analysis of the pros and cons of the boat.

(3)  What the students will be asked to produce
-       The students will be asked to graph the linear equations listed on the side of the paper and will color the interior part of each 2d shape, analyze the pros and cons of the boat, create a new boat by implementing the cons and organize where such boat will be used.

(4)  How you will assess the project.
-       The assessment, for the most part, will be focused on whether the graph is correctly drawn. Reading the linear equation by its slope and y-intercept is the key part of understanding the unit. The supplementary assessment will be on students’ creativity to draw a new boat of one’s own and translate back into the linear equation. The discussion portion will also be used for assessment in which students are allowed to discuss different ideas to create a boat and the application of it, as a communication and participation portion.

Assessment and evaluation (100 words)
How will you build a fair and well-rounded assessment and evaluation plan for this unit?

1)    formative
-       Formative assessment occurs in almost any activity that the teacher assign to students. Most of the warm-up activity will have students demonstrate their communication, collaboration with peers, and math understanding. The formative assessment in the beginning will take note of the progress each student has made at the end of the class compared to the activities in the beginning.

2)    Summative
-       Summative will be the progress noted in the formative assessment. Students will be notified of this fact, so that teachers can expect a minimum degree of participation in the classroom. Test materials and correctness in the reasoning will be less of a value here but will be measured at the end of each unit/lesson.

3)    informal/observational
-       Take note of the formative

4)    more formal assessment modes
-       Boat project, mid-term tests, mark appeal process

Elements of your unit plan:
a)  Give a numbered list of the topics of the 10-12 lessons in this unit in the order you would teach them.
Lesson
Topic
1
 What are Linear Equations?
2
 Different Forms of Linear Equations
3
 Ways to Solve Linear Equations
4
 Changing Word Problems into Linear Equations
5
 Terminologies that Appear in Word Problems
6
 How to Translate Word Problems into Math Equations
7
 Linear Equation with Rational and Irrational Numbers
8
 Linear Equation with Multiple Unknowns
9
 Systems of Linear Equations
10

(11)

(12)






Subject: Mathematics
Grade: 10
Date: Dec. 11, 2017
Duration: 1 week

Lesson Overview
(What this lesson is about)
-       Different forms of linear equations
-       How to solve it
-       Extension to difficult problems
Class Profile
-       25 students, 1 IEP, 2 ELLs


Big Idea(s)


-        Operations between polynomial expressions are connected and allow us to make meaning through abstract thinking

Curriculum Competencies
-       Demonstrate fluent and flexible thinking of number
-       Model mathematics in contextualized experiences

Content
-       Linear operations and the meaning of linear equations
-       Where it is used and why it is important to make contextualized language into a mathematical expression
-       The techniques of solving variety of forms of linear equations and how to solve it
Curriculum Objectives

-       Using the mathematical language and communicating the problem with peers and connecting it into a real world situation




Materials and Equipment Needed for this Lesson

-       5 Markers
-       Big Bristol Board-like papers
-       The lesson power point
-       Formative assessment sheet




Lesson Stages
 Learning Activities

Time Allotted
1.
Warm-up



-       Organizing with Graphic organizers and group mind-mapping for linear equation and collaborative problem solving process and fun math puzzles
-       Ex) Jigsaw Puzzle



30 min
2.
Presentation

-       The different forms of linear equations. How do we solve for them?
-       Introduction of the terms: Cross Multiplying, Isolating a variable: What does each do to get our x value?



20 min
3.
Practice and Production

Practice, reinforcement, and extension of the new content and language.






-       Things to consider: What does it mean to isolate a variable? What does it mean to cancel out a coefficient? What kind of approach are there with variables on both left hand side and the right hand side?
20min
4.
Closure


The universe of solving systematic equations often involve more than one equations simultaneously because there are more than one unknowns to the wonders of the world. Can we still find x in such a case as well?

5 min


Assessment/Evaluation of Students’ Learning


-       Formative assessment starts from the warm-up process. In doing the jigsaw students will find the location of the jigsaw by solving linear equations shown on each puzzle piece. But, some students will solve the puzzle by trial and error. If some pieces dont fit, the students will do it until they find the right piece. Then, they will realize the location of the puzzle is indicated in the x-value of the linear problem on the piece and find the answer to the problem that way.
-       The evaluation will come up in the word problems mostly because oftentimes students get stuck to the procedure of solving linear equations. The procedure is in fact the least important thing in solving linear equations. They can isolate the variable then reduce the coefficient to 1 but they can do it in any order they want. Not to emphasize what counts as correct and what counts as not correct I will provide as many word problems as possible. The transition to get familiar with the test format this will be made first of all as a formative then to summative.










Reflection

Reflect on your process of developing this lesson plan. Explain how your lesson plan relates to some of the theoretical concepts acquired in this course so far.

-       Students often have difficulties solving linear equations for different forms of linear equations. For example, if an unknown value has a whole number coefficient, one does not know how to get cancel out the whole number greater than 1 unless teacher guides them to ‘divide’ by that whole number. If the coefficient is a rational value that is not a whole number, it becomes a whole new problem for students.
-       It becomes evident when teachers observe students, they want procedural steps to find the value of x. There needs to be a transitional process and instructional guidance with teachers to explain what it means to isolate a variable or cancel the coefficient








Subject: Mathematics
Grade: 10
Date: Dec. 11, 2017
Duration: 1 week

Lesson Overview
(What this lesson is about)
-       The Benefit of Changing Word Problems to Mathematical equations
-       Terminologies that emerge in word problems
-       How to translate them into math equations
Class Profile
-       25 students, 1 IEP, 2 ELLs


Big Idea(s)


-        Operations between polynomial expressions are connected and allow us to make meaning through abstract thinking

Curriculum Competencies
-       Demonstrate fluent and flexible thinking of number
-       Model mathematics in contextualized experiences

Content
-       Linear operations and the meaning of linear equations
-       Where it is used and why it is important to make contextualized language into a mathematical expression
-       Translating variety of word problems into linear equations
Curriculum Objectives

-       Using the mathematical language and communicating the problem with peers and connecting it into a real world situation




Materials and Equipment Needed for this Lesson

-       5 Markers
-       Big Bristol Board-like papers
-       The lesson power point
-       Formative assessment sheet




Lesson Stages
 Learning Activities

Time Allotted
1.
Warm-up



-       Word Problem activities: Students will create their own problems and translate them into mathematical equations and have their ideas posted on a big Bristol board.
-       Solutions to the problems that the group has come up
-       Presenting it to peers and a teacher

30 min
2.
Presentation

-       Terminologies: What are the terms we are aware of in the math problems in general? What are the terms that we are not fully aware but useful for mathematical expressions?
-       Translating the word problems into mathematical equations and reflecting on the systemic approach to solving the equations


20 min
3.
Practice and Production

Practice, reinforcement, and extension of the new content and language.










20min
4.
Closure


The problems in the real world brings us a limitation for solving them because they are not so directly translatable. What are such problems? How can they be translated into a mathematical equation so that the problem becomes easily solvable?



5 min


Assessment/Evaluation of Students’ Learning


-       Formative assessment starts from the warm-up process where students collaborate to come up with their own word problems and making a connection to a problem that can be systematically solved by the steps we have learned in our previous lesson. The creative process inquires students to think about the new concepts and make connections to why the translation is important.
-       Students will evaluate their peers and it allows teachers to evaluate where they are at in terms of what to seek and where to translate.



Reflection

Reflect on your process of developing this lesson plan. Explain how your lesson plan relates to some of the theoretical concepts acquired in this course so far.

-       It is often a problem that teachers present with all the cases of word problems because otherwise students may not see the connection between where the word problems appear and why translating them to mathematical equations. Hence, it is often encouraged to guide students to come up with their own and sometimes its OK to have problems not necessarily be a linear problem or even unsolvable. In the end, their presentation will sum up their mistakes and observe their own why it cannot be translated to mathematical equation sometimes.



Subject: Mathematics
Grade: 10
Date: Dec. 11, 2017
Duration: 1 week

Lesson Overview
(What this lesson is about)
-       Linear equation (one unknown) with rational and irrational numbers
-       Linear equation with multiple unknowns
Class Profile
-       25 students, 1 IEP, 2 ELLs


Big Idea(s)


-        Operations between polynomial expressions are connected and allow us to make meaning through abstract thinking

Curriculum Competencies
-       Demonstrate fluent and flexible thinking of number
-       Model mathematics in contextualized experiences

Content
-       Linear operations and the meaning of linear equations
-       Where it is used and why it is important to make contextualized language into a mathematical expression
-       Systematizing simultaneous linear equations to solve for multiple unknowns
Curriculum Objectives

-       Using the mathematical language and communicating the problem with peers and connecting it into a real world situation




Materials and Equipment Needed for this Lesson

-       5 Markers
-       25 laminated sheets
-       The lesson power point
-       Formative assessment sheet




Lesson Stages
 Learning Activities

Time Allotted
1.
Warm-up



-       Organizing with Graphic organizers and group mind-mapping for linear equation and collaborative problem solving process and fun math puzzles
-       Ex)

Figure 1 Credit to: Bethany @ www.mathgeekmama.com
-       Presentation of how each group has solved it.

40 min
2.
Presentation

-       We are presented with linear equations that involve multiple variables. In fact, we have been using it but which one have we not seen yet? How do we solve for them?
-       Introduction of the terms: Solving for equations with multiple variables: How to subtract/add/multiply/divide between equations and how to derive the unknowns
20 min
3.
Practice and Production

Practice, reinforcement, and extension of the new content and language.




Practice1) Solving using graphical method:

Practice2) Test: Solving using systematic approach:


10min
4.
Closure


We have been dealing with solving a equation with 1 variable with many different forms and contexts. We have seen the limits of its presentation to translating to 1 unknown oftentimes. Hence, we have seen the necessity of systematizing it by introducing multiple variables and different solutions to obtain different unknowns. The problem arises still: How can we solve for these variables which involve more wild looking unknown values such as cubed x and exponential variable?
5 min

Assessment/Evaluation of Students’ Learning

-       Students will be struck by the difficulty of the equations which they have not encountered in the previous lessons. The point is that how they collaboratively come to the agreement when solving those systems of linear equations involving more than one equations and play with variables rather than constant values existent in linear equation involving one variable.
-       The presentation therefore will evaluate how they have come or not come with the solutions and how far they have gone to or close to the value of unknowns through communicating with peers
-       Test papers at the practice time will be measured and extended to measure student performance in deriving the solutions to the problem (Starting from formative to summative)

Reflection


-       Linear equations with multiple equations is naturally come up in the contextualized problems that students make themselves in the previous lesson.
-       The students own intellectual struggle to find that multiple variables is the key motivation to this lesson. The solution does not come out so easy because this time you have to apply different operations with the equations this time, not just numbers to isolate variables or reduce coefficients.
-       Starting from students own brainstorming to get an idea of where and how to derive the solution to multiple variables (in our case, ice cream cost problem), they will get a brief idea what it is that we are trying to solve here. We are not only interested in just one but for many unknowns.
In fact, they have been using systems of multiple linear equations themselves but somehow not so much aware of it. This time, I will introduce from how we have been afraid of this multiple equations to how familiar we were in solving different contextualized problems.


Comments

  1. Thanks for this redone unit plan, Jun.

    Rationale: Interesting! I am interested in seeing how you bring this sense of critical thinking and uncertainty to the translation process in mathematical/ contextual problem solving.

    Project: Hmmmm… interesting (for the teacher) to take the shape of a birchbark canoe and analyze it in terms of linear equations that the students can reproduce.

    However, when you look at photos of actual birchbark canoes (like the archival photo here: http://www.ojibwe.org/home/images/pressroom/photos/LANG1_300dpi.jpg), you will see that, like most boats, they are made up of curves, not straight lines! Even if you can approximate the curves with a lot of tangent lines, it is only a pretty inaccurate approximation.

    In terms of Indigenous connections, I really don’t think any canoe was ever designed and built using linear equations. And birchbark canoes were only built in places where birch trees grow (Eastern Canada/ US); canoes in BC are more commonly dugout canoes, made from hollowed tree trunks.

    How are the students meant to analyze the pros and cons of the boat? Will they ever be trying out this canoe (or one like it)? What is the basis for their analysis and redesign of a different canoe?

    I see quite a few problems with this project, but there is a good idea about translation back and forth from linear equations to drawing at the heart of it.

    My suggestion would be to find a different object or shape, one that actually is formed from straight lines, but that is also culturally interesting and not simplistic. It might have an Indigenous connection or not. For example, why not explore mathematical string art (for example, https://www.youtube.com/watch?v=Xc7gbW0kb14 or https://www.youtube.com/watch?v=lm38Url_560, or this mathematically fascinating one: https://www.youtube.com/watch?v=qhbuKbxJsk8 ) ? These are patterns made of straight lines that give the illusion of curves, and they can be quite beautiful. Your project could follow the same trajectory, but start with students drawing a string art pattern you have analyzed, then have them design their own string art pattern, break it down into linear equations, and finally give that to other students to draw.

    You could even create ‘adult colouring books’ (very popular now) where people first graph the lines on Cartesian coordinates and then colour them. Or students could program their linear patterns into GeoGebra to create their mathematical string art designs… or actually make them with string.

    What do you think?

    Assessment: Looks OK

    Unit elements: It seems to me that you have given too much time to some topics and too little to others. For example, ‘terminologies that appear in word problems’ does not seem like enough for a whole lesson, while ‘systems of linear equations’ needs several lessons. You have 10-12 lessons to work with, but have only used 9. I suggest you re-work this list of elements with advice from your SA, expanding some topics and contracting others.

    A question: Why do your unit plans give the date as Dec. 11, 2017 with a duration of one week? This is not when you will be teaching this unit (obviously), and the unit is designed to take 3-4 weeks…!

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  2. Lesson #1: You have scheduled 30 minutes for a warm-up, which seems a very long time! I don’t understand how you plan to spend this time with your class as your description is rather vague. Will students be doing simple jigsaw puzzles? Mind-mapping…something? Collaborating on…what? This needs to be clarified and explained!

    Ah, looking to the end of the lesson plan, I see that there are linear expressions on the jigsaw pieces, and a quick google search tells me you got this (without attributing it) from https://www.teacherspayteachers.com/Product/Writing-linear-equations-in-slope-intercept-form-from-other-forms-jigsaw-puzzle-3189946 . However I still don’t understand how these expressions tell students how to solve the jigsaw, as they aren’t equations… just expressions. Is it something to do with slope? I am still confused, although this seems a bit more connected… Can you explain how this jigsaw puzzle exercise actually works?

    Presentation, practice and production: The example you give looks more like one from a unit on rational equations than on linear equations. Linear equations have the variables to the power 1 (not to the power -1, in the denominator).

    I found this (again unattributed) example online at https://www.mathportal.org/algebra/solving-equations/solving-linear-equations.php.

    It’s OK for you to use some resources that you borrow from others, but you should ALWAYS let it be known where you borrowed from!

    What other examples are you planning to use? What will be your basis for choosing and ordering examples in terms of your students’ learning trajectory?

    What will the students be doing during the 40 minutes of ‘presentation, practice and production’? You have only written down some mathematical topics, but I have no idea from this what you are planning for you and the students to be doing.

    Closure: Are you introducing systems of equations/ multiple variable equations at this point? If so, why bring that in at the end of a class?

    I am still unclear about why you say that ‘the procedure is in fact the least important thing in solving linear equations’ when you have just taught a highly procedural lesson. What do you consider to be important in this topic — and then, why not focus on the important things in the lesson? You say you will provide many word problems — but you have not included even one of them here! I am left quite confused about how this lesson will go and what the focus is.

    Lesson #2: Warm-up: Asking students to make up word problems will not generally produce the kind of word problems you are aiming for (in relation to linear equations or other topics). Students are just starting to figure out what the topic is, and don’t have the resources to design word problems around it. You will very likely get word problems that relate to elementary school arithmetic — and this is not worth spending 30 minutes on! I suggest you rethink and re-plan the warm-up for this lesson. Perhaps, for example, you might give each group a linear equation to start with, and have them try to write a word problem around it… although that is not necessarily an easy task!

    Presentation, practice and production: A bit sketchy, but the translation problems you have selected and the general idea of translation from words into linear equations is helpful. It seems like the students will be quite actively involved in this lesson.

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  3. Lesson #3:
    Warm-up: The system of equations puzzle sheet you show (attributed this time to mathgeekmama.com, thanks!) is not the strongest puzzle for Grade 10s. For one thing, there are repeated equations in both the horizontal and vertical directions (the two rows that sum to $10.79 and the two columns that sum to $12.55). Beyond that, the graphics might look a bit babyish for 15-year-olds. I’m sure you can find other, somewhat more challenging similar problems for your students. And you’ll need more than one puzzle — what else will you use? In my opinion, 40 minutes (more than half your class) is not really justifiable for ‘warm-up’ unless that warm-up really gets your students deeply involved in the topic of the lesson.

    Presentation, practice and production: It looks to me like this lesson is about systems of equations, NOT so much about linear equations with rational and irrational numbers. (There are no irrational numbers included in your examples at all…) For a graphical solution of linear equations in 2 unknowns, you only need two lines, not three.

    As I mentioned earlier, ’systems of equations’ will very likely need two or three classes to introduce various solution techniques and an understanding of why they work (and why they are equivalent).

    The Closure question about solving polynomials of degree >1 takes us out of linear equations and into higher degree curves. Why introduce this in the last five minutes of class, with no follow-up?

    Overall: This unit plan has many problems, and is not very strong as it stands. There is some degree of confusion about what the unit topic entails, and how long needs to be spent on each part of the unit. Lesson plans have some good ideas, but they are often vague, and examples are not well thought out. I don’t think it is defensible to give 30-40 minutes to a ‘fun’ warm-up that is not thoroughly and deeply connected to the topic of the lesson. I recommend spending a lot more time, and consulting with your SA, to improve this unit plan to the point where it is ready to teach to your class on your long practicum!

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