There are 18 boys who want to play paintball. If each team has 3 players how many teams will there be?

In this lesson you will learn to divide by using a repeated

subtraction model.

Let’s ReviewLet’s Review

You know that when you subtract you start with the whole (the biggest

number) and take away a part to find the difference.

If you have 8 apples and eat 2 how many do you have left? 8 – 2 = 6 apples

Let’s ReviewA Common Mistake

When using repeated subtraction to divide make sure your picture matches

the story!

Let’s ReviewCore Lesson

A baseball club has 12 baseballs. If each team gets 4 balls how many

teams can play?

Let’s ReviewCore Lesson

12 – 4 = 8 8 – 4 = 4 4 -4 = 0

12 balls divided into groups of 4 makes 3 groups.

Let’s ReviewCore Lesson

12 ÷ 4 = 3

dividend divisor quotient

Let’s ReviewCore Lesson

There are 18 boys who want to play paintball. If each team has 3 players how many teams will there be?

Let’s ReviewCore Lesson

15 – 3 = 12

18 – 3 = 15

12 – 3 = 9

9 – 3 = 6

6 – 3 = 3

3 – 3 = 0 18 boys divided into groups of 3 makes 6 groups.

Let’s ReviewCore Lesson

18 ÷ 3 = 6

dividend divisor quotient

In this lesson you have learned to divide by using a repeated

subtraction model.

Let’s ReviewGuided Practice

Thirty people arrived to play basketball. Each team needs 5 players. How many teams will there be?

Draw a picture using the sharing model to show equal shares.

Label the dividend, divisor and quotient.

Let’s ReviewGuided Practice

Let’s ReviewExtension Activities

Read the stories that follow. Use manipulatives such as unifix cubes, counters, tiles or a tool of your choice to show the repeated subtraction model.

Draw a picture to match that shows repeated subtraction.

Write an equation (number sentence)

Label the dividend, divisor and quotient.

Let’s ReviewExtension Activities

A baker makes two dozen chocolate cupcakes. She puts four in each box. How many boxes does she need?

The volleyball club had 48 kids sign up. Each team needs to have 8 players. How many teams can be formed?

Let’s ReviewExtension Activities

A baker makes three dozen chocolate cupcakes. She made 7 decorated boxes that each hold 4 cupcakes. Does she have enough boxes for all the cupcakes? If not how many more/less does she need?

Let’s ReviewQuick Quiz

You baked 21 brownies for the bake sale. If 3 brownies are in each package how many packages will you have to sell ?

32 gummy worms are in a package. If 4 worms are a serving how many people will get gummies?

Find the quotient by using the repeated subtraction model.

Lesson Slides Rubric

Use this rubric to ensure your lesson plan is great!

Math Rubric  Criteria for Success Things to avoid

Storyline or Arc of the Lesson

There is a clear arc to the lesson.  One slide leads naturally to the next so that there is a flow and a building of meaning

All the components of the lesson are there but they seem disconnected, as if the author wrote each without thinking about how they fit into the whole. 

Hook Slide

The teacher poses a simple question that illicits the response, “yeah, I do wonder how that works…”  

The question is short A relevant example is included when it is short and 

further pulls the learner in  The question mirrors what the student will learn, then 

need to do later in the guided practice

The question seems formulaic, inauthentic, or overly “school-ish” (message: you have to learn this because you’re in school rather than, this is genuinely interesting)

The hook is overly-complicated and potentially confusing The question does not parallel the guided practice questions

Objective Slide

The objective follows the form (you will learn X by doing Y)

Is concise and follows the form provided in the examples

Does not follow the form Is overly vague in describing either the X or the Y Is too long Is written for teachers but not students

Let’s Review

Reminds the student of how this lesson fits with other lessons (the lesson, however, should still be able to stand on its own)

Reminds the student of important vocabulary Is as concise as possible Uses visuals whenever possible

Is either too detailed or not detailed enough in connecting the lesson to other lessons

Leaves out important touch points Makes the lesson overly dependent on the other lessons 

(student will be confused or feel like they’ve made a mistake, if they watch this lesson alone)

Common Mistake Points out a common mistake that students make  Concisely explains the thought process that leads to that 

mistake

Isn’t actually a mistake students make (too simple) Is confusing or vague

Modeling a Way of Looking at It

Clearly models a way to look at the standard Uses visuals as often as possible to show how the way of 

looking works Is in “think aloud” format.  The teacher is opening up 

his/her thought process to the student Takes advantage of every opportunity to explain why the 

math works the way it works Engages the learner by asking questions along the way to 

build suspense Uses an an example to show the way in action Explains how this way of looking at it shows why the 

common mistake (see above) is a mistake

Focuses on the algorhythm (or trick) instead of on showing a way of looking at the math

Fails to use visuals to show a way Fails to explain his/her thinking along the way.  The teacher 

effortlessly runs through the steps as if it’s all obvious and easy Does not ask any questions along the way to pull the learner in Misses opportunities to explain the why behind the math Fails to explain why this way of looking at the math addresses 

the common mistake

Objective Review

Reviews the objective in a way which conveys, “we’ve come full cicle and now you see this objective with new eyes.”

Serves as a “let’s pull this all together” moment that helps organize the lesson in the learner’s mind

Creates abrupt feeling between the lesson and the reviewing (subtext: “we’re done with this lesson, let’s quickly bring it to a close.”)

Guided Practice Is at the same difficulty level modeled in the lesson  Is connected to the initial hook question

Seem unrelated to the hook question Is at a different difficulty level than that modeled in the lesson

Extension Activity Suggestions

Includes a suggestion for a struggling student who needs more opportunities for practice

Includes a suggestion for students who seem to get it but need more practice

Includes a suggestion for students who get it and are ready to be challenged further

Suggestions should clearly build from the approach in the core lesson

Does not include differentiation Does not thoughtfully connect or flow from the lesson Does not clearly build from the approach in the core lesson Does not give a range of activities

Aesthetics

The slides use the correct colors (blue, green, red) in the correct sequence.

The slides use the correct fonts The slides use handwriting and the handwriting appears 

as written in the right places The slides only use the headers/titles provided  The slides use the provided visuals or include visuals 

created by the author or LearnZillion The slides use animation, highlighting, and circling to 

scaffold the learning, keeping the eye focused on what the teacher is introducing/explaining

The slides clean and uncluttered.  The visuals and text do not exceed the maximum amount (see tutorial for example of maximum)

The slides use other colors or vary the order of the colors The slides add new headers/titles that aren’t part of the 

template The slides use clip art The slides are cluttered Animation is distracting and feels more like sizzle than part of 

the steak

Graphic and Image Templates

Copy and Paste items from these slides to make your presentation look great!

You can copy and paste these items into any slide

Green text box that appears letter by letter

Green text box that fades in

Blue text box that appears letter by letter

Blue text box that fades in

Red text box that appears letter by letter

Red text box that fades in

You can copy and paste these items into any slide—make sure you copy both the bubble and

the text!Do I feel strongly about it?

Do I have a lot to say?

Do I feel strongly about

it?

Do I have a lot to say? Do I have a lot to

say?

You can copy and paste these items into any slide. You can resize them as

needed! Use black text when you write in me please! Also, keep my text left-justified rather than centered!

Use black text when you write in me please! Also, keep the text left-justified rather than centered!

All arrows can be recolored by changing the “shape fill.” You can also resize them or rotate

them!

[Write first step here…]1

2 [Write second step here…]

3 [Write third step here…]

You can use these when discussing main ideas or steps in a process…

You can resize any of these boxes and use them to highlight text or ideas.

Let’s Review

Let’s Review

Let’s ReviewA Common Mistake

Let’s ReviewGuided Practice

Let’s ReviewQuick Assessment

Let’s ReviewExtension Activities

Core Lesson