MPP.3 Group 2 · Challenge

Practice Set · Part 1

Math is Mine

Pick up where we left off

Name: Date: Group:

Where we left off

Our goal: I can describe the ways we are all doers of math, and compare my math story with a classmate's, explain how I can tell, and judge a case I have not seen before.

The big idea: Everyone uses math daily. We do it differently, and sharing how we do it makes all of us better at it — and you can say why it is true, and where it would stop being true.

Model to copy — Watch me estimate the Ferris wheel

  1. The Ferris wheel has 20 cars, and about 4 people fit in each car. About how many people can ride at one time?
  2. I count the cars: 20. Then I estimate how many riders fit in one car: about 4.
  3. I do not count every person — an estimate is a reasoned answer that is close enough to be useful.
  4. 20 × 4 = 80, so I would say “about 80 people.”

Start here

You did these with your group. Now do them on your own — the model above is yours to copy.

  1. 1

    Same stepsFinish what the group started. Use the model above, step for step.

    Try it together — then prove it: 78.5 = 70 + 8.5. 78.5 = 78 + 0.5. 78.5 = 80 − 1.5. Every one of those is the same number wearing different clothes. Find two more. Now prove it: say why that move had to work at all — not just that it did.
    Show your work
  2. 2

    Warm restartWhich expression shows 4 groups of 5 students?

    1. A4 × 5
    2. B4 + 5
    3. C5 − 4
    4. D5 ÷ 4

    How do you know?

  3. 3

    Warm restartWhat is 40 ÷ 10?

    1. A4
    2. B10
    3. C30
    4. D400

    How do you know?

  4. 4

    Warm restartYou have 3 bags with 5 apples in each bag. How many apples in all?

    1. A15 apples
    2. B8 apples
    3. C2 apples
    4. D35 apples

    How do you know?

1.1 Small Group · Group 2 · Practice SetPart 1 of 4
MPP.3 Group 2 · Challenge

Practice Set · Part 2

Math is Mine

Keep going

You answered these out loud. Now write them.

Answer, then say how you know — the reason is the part that counts.

  1. 5

    Think it throughThe lesson says, “What we believe about ourselves, about others, and about what we are learning shapes us.” Why does the Strengths Inventory ask you to name a growth area, not only a strength?

    1. ANaming what you want to grow shapes how you approach learning all year, just as naming a strength does
    2. BGrowth areas are only for students who are behind in math
    3. CThe growth area replaces the strength, since you can only claim one
    4. DNaming a growth area has nothing to do with your beliefs about yourself

    Why is that the answer?

  2. 6

    Think it throughOne student's math story says she liked math more once she started drawing problems; another's says he liked it more once he memorized steps. What is the point of hearing a classmate's story that is DIFFERENT from yours?

    1. AIt shows there is more than one valid way to be a doer of math, and you might borrow a new strategy
    2. BWhichever method is faster is the “right” one, so you should switch to it
    3. CIf a classmate's story differs from yours, one of you must be doing math wrong
    4. DIt doesn't matter — you only need to hear stories similar to your own

    How do you know? Give a second reason as well.

  3. 7

    Think it throughWhich of these is the BEST example of a specific math strength for the Connect prompt?

    1. A“I can explain my thinking out loud so others can follow my steps”
    2. B“I'm good at math”
    3. C“I got an A last year”
    4. D“Math is easy for me”

    Explain your thinking. What would have to change for a different choice to be right?

  4. 8

    Back to the modelThe Ferris wheel has 20 cars, and you estimated about 4 riders fit in each car. Why is 20 × 4 an estimate and not an exact count?

Sort it again — on paper this time

Write the letter of the group each one belongs in.

A — This is doing mathB — Most people don't call this math
1.1 Small Group · Group 2 · Practice SetPart 2 of 4
MPP.3 Group 2 · Challenge

Practice Set · Part 3

Math is Mine

Words and reasoning

Word bank · Banco de palabras

doer of math (persona que hace matemáticas)math story (historia matemática)strength (fortaleza)decompose (descomponer)estimate (estimar)

Use the words

Fill each blank with a word from the bank.

Explain the thinking

  1. 9

    Find the mistakeAnother student made this exact mistake in this lesson. Explain why it is wrong, then write what they should have done.

    The mistake: Believing that 'doing math' only counts when it happens on paper in a classroom.
  2. 10

    Say moreYou sorted cards like 'splitting a pizza fairly' and 'choosing the shorter line' as doing math. What do all eight cards have in common that makes them math, even though none of them looks like a worksheet?

  3. 11

    Write your ownWrite your own problem about this situation, then solve it and show the answer. The situation: A Ferris wheel turns slowly against the evening sky. Each car is filling with riders as the line moves forward.

    Show your work
1.1 Small Group · Group 2 · Practice SetPart 3 of 4
MPP.3 Group 2 · Challenge

Practice Set · Part 4

Math is Mine

Show what you know

Last check

  1. 12

    Show what you knowExplain your thinking — Which statement best shows what this lesson means by “we are all doers of math”?

    1. AEveryone uses mathematical thinking daily, in different ways, and sharing those ways helps us grow
    2. BEveryone gets the same score if they try hard enough
    3. CEveryone must solve problems the same way to be correct
    4. DOnly the fastest students are really doing math

    Explain your choice.

Be honest — this tells your teacher what to do next

I can…Not yetGetting thereGot it
I can describe the ways we are all doers of math, and compare my math story with a classmate's, explain how I can tell, and judge a case I have not seen before.
I can explain why it works: Everyone uses math daily. We do it differently, and sharing how we do it makes all of us better at it…
I can justify my answer to a skeptic and connect it to a second strategy or representation.

One question I want to ask my group next time