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New Jersey Center for Teaching and Learning Progressive Mathematics Initiative This material is made freely available at www.njctl.org and is intended for the non-commercial use of students and teachers. These materials may not be used for any commercial purpose without the written permission of the owners. NJCTL maintains its website for the convenience of teachers who wish to make their work available to other teachers, participate in a virtual professional learning community, and/or provide access to course materials to parents, students and others. Click to go to website: www.njctl.org

1st Grade Addition to 20 2012-07-05 www.njctl.org

Setting the PowerPoint View • Use Normal View for the Interactive Elements • To use the interactive elements in this presentation, do not select the Slide Show view. Instead, select Normal view and follow these steps to set the view as large as possible: • On the View menu, select Normal. • Close the Slides tab on the left. • In the upper right corner next to the Help button, click the ^ to minimize the ribbon at the top of the screen. • On the View menu, confirm that Ruler is deselected. • On the View tab, click Fit to Window. • On the View tab, click Slide Master | Page Setup. Select On-screen Show (4:3) under Slide sized for and click Close Master View. • On the Slide Show menu, confirm that Resolution is set to 1024x768. • Use Slide Show View to Administer Assessment Items • To administer the numbered assessment items in this presentation, use the Slide Show view. (See Slide 14 for an example.)

click on the topic to go to that section Table of Contents - Real World Addition with Counters - Addition Models with Cubes - Addition Sentences - Number Stories - Addition on a Number Line - Addition on a Number Grid - Adding Zero - Adding One - Adding Ten on a Number Line - Patterns when Adding 10 - Doubles - Doubles Plus One - Turn Around Facts - Making Ten with Frames - Making Ten with Hands - Missing Addend - Missing Addend with a Number Grid - Three Addends

Real World Addition with Counters Click to return to Table of Contents

Three red leaves fell. Then two yellow leaves fell. How many leaves fell in all?

Bob put 5 red apples in the wheelbarrow. Then he put 2 green apples in the wheelbarrow. How many apples does he have in all?

We can use counters to help us solve addition problems. ______ apples in all 2 green apples 5 red apples

Let's Practice ______ tools in all 6 rakes 2 shovels

Let's Practice 3 pumpkins 3 gourds ______ in all

Let's Practice _____ in all 4 and 1 more

Does 5 and 3 more equal 6? 1 A Yes B No

2 3 girls and 2 more boys equals? A 4 B 2 5 C

3 7 and 1 more equals?

4 and equals ______

1 and 9 more equals? 5 19 A B 8 10 C

Addition Models with Cubes Click to return to Table of Contents

How many green gourds? How many orange gourds? How many gourds in all?

Let's show it with counters 7 and 4 ________ green gourds orange gourds gourds in all

We can also use connecting cubes to help us add. The orange cubes represent the orange gourds and the green cubes represent the green gourds. 2 and 3 ______ green orange gourds gourds gourds in all

Use connecting cubes to help you solve these problems. 6 apples, 2 more apples. How many apples in all? 7 leaves, 1 more leaf. How many leaves in all? 4 pumpkins, 3 more pumpkins. How many pumpkins in all?

We can draw squares to represent connecting cubes as well. 4 crows and 5 crows _______ crows in all

5 apples and 3 more apples _____ apples in all 7 rakes and 2 more rakes _______rakes in all

4 turkeys and 1 more turkey _____ turkeys in all 8 leaves and 4 more leaves ______ leaves in all

6 7dogs and 3 more dogs. 10 dogs in all. A Yes B No

3cats and 3 more cats. _____ in all 7 5 A B 6 33 C

8 3pumpkins and 2 more pumpkins. ____ pumpkins in all

9 4rakes and 2 more rakes. _____ rakes in all 6 A B 7 8 C

10 8hats and 4 more hats. _____ hats in all

Addition Sentences Click to return to Table of Contents

+2 3 = 5

4 + 5 9

+1 6 = 7

2 + 2 4

+5 3 = 8

5 + 2 7

11 Which addition sentence matches this story: Two chickens are at the farm. Seven more chickens come. How many chickens are at the farm? 2 + 7 = 10 A B 2 + 7 = 9 2 + 7 = 8 C

Which addition sentence matches this story: Six kids are playing in the leaves. Two more kids come play with them. Now there are eight kids in the leaves. 12 6 + 6 = 8 A B 8 + 2 = 6 6 + 2 = 8 C

13 Which addition sentence matches this story: Five pumpkins are on the table. The farmer puts two more pumpkins on the table. There are seven pumpkins on the table. A 5 + 3 = 7 5 + 2 = 7 B 5 + 5 = 10 C

14 Which addition sentence matches this story: One crow is on the fence. Four more crows sit on the fence. How many crows are on the fence? 1 + 4 = 5 A 14 + 0 = 14 B C 4 + 10 = 14

15 Which addition sentence matches this story: Three sunflowers are yellow. Three more sunflowers are red. How many sunflowers in all? 3 + 3 = 6 A 3 + 0 = 3 B 0 + 3 = 6 C

Number Stories Click to return to Table of Contents

8 + 3 =

6 + 4 =

3 + 2 =

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