Explore Math - Book B - Operations and Algebraic Thinking

Operations and Algebraic Thinking

Chapter 2: Addition

Chapter 3: Subtraction

1 Compose and Decompose Numbers to 10

Compose 4 and 5

Instructions Present

a. Use the yellow and blue cars to show ways to make 4 and 5.

b. Encourage the students to suggest more ways to make 4 and 5.

Instructions Practice 2-4. Write ways to make 4. Write the numbers. and and and

and and and

Instructions Practice 5-7. a. Write ways to make 5. Write the numbers. b. Suggest one more way to make 5.

Instructions Practice 8-10. Color the objects blue and yellow to make 4 and 5. Write the numbers. and and and

2 Decompose 4 and 5

Instructions Present

a. Use the rectangles to show ways to take apart 4 and 5.

b. Encourage the students to suggest more ways to take apart 4 and 5.

Instructions Practice

2-7. a. Draw rectangles around the objects to show one way to take apart the given number. Write the numbers.

b. Suggest more ways to take apart 4 and 5. and and and

and and

Instructions Practice

8. Take apart four bananas. Draw the bananas in the blank boxes.

9. Take apart five apples. Draw the apples in the blank boxes.

3 Compose 6 and 7

Instructions Present

a. Use the yellow and blue dots to show ways to make 6 and 7.

b. Encourage the students to suggest more ways to make 6 and 7.

Instructions Practice 2-4. a. Color the objects yellow and red to make 6. Write the numbers. b. Suggest more ways to make 6. and and and

Instructions Practice

5-7 a. Color the vegetables red and yellow to make 7. Write the numbers. b. Suggest one more way to make 7. and and and

Instructions Practice 8-10 Color the objects green and red to make 6 and 7. Write the numbers. and and and

4 Decompose 6 and 7

Instructions Present

a. Use the rectangles to show ways to take apart 6 and 7.

b. Encourage the students to suggest more ways to take apart 6 and 7.

Instructions Practice

2-7. Draw rectangles around the objects to show one way to take apart the given number. Write the numbers.

and and

Instructions Practice

8. Take apart six balloons. Draw the balloons in the blank boxes.

9. Take apart seven balls. Draw the balls in the blank boxes.

5 Compose 8 and 9

Instructions Present

a. Use the yellow and blue dots to show ways to make 8 and 9.

b. Encourage the students to suggest more ways to make 8 and 9.

Instructions Practice

2-4. a. Color the objects yellow and red to make 8. Write the numbers. b. Suggest more ways to make 8. and and and

Instructions Practice

5-7. a. Color the objects yellow and blue to make 9. Write the numbers.

b. Suggest more ways to make 9. and and and

Instructions Practice 8-10. Color the objects orange and green to make 8 and 9. Write the numbers. and and and

6

Decompose 8 and 9

Instructions Present

a. Use the rectangles to show ways to take apart 8 and 9.

b. Encourage the students to suggest more ways to take apart 8 and 9.

Instructions Practice

2-7. Draw rectangles around the objects to show one way to take apart the given number. Write the numbers.

and and

Instructions Practice

8. Take apart eight pens. Draw the pens in the blank boxes.

9. Take apart nine rulers. Draw the rulers in the blank boxes.

7 Compose 10

Instructions Present

a. Use the yellow and blue dots to show ways to make 10.

b. Encourage the students to suggest more ways to make 10.

Instructions Practice

2-10. a. Color the balloons blue and red to make 10. Write the numbers. b. Suggest more ways to make 10. and and and

8 Decompose 10 and and

Instructions Present

a. Use the rectangles to show ways to take apart 10. Trace the number.

b. Encourage the students to suggest more ways to take apart 10.

Instructions Practice

2-7. Draw rectangles around the flowers to show one way to take apart the given number. Write the numbers.

Instructions Practice 8-9. Take apart ten flowers. Draw the flowers in the blank boxes. and and

Composeand Decompose Upto10

Instructions Practice

1-7. Color the objects blue and red to make the given numbers. Write the numbers.

and and and and

Instructions Practice 8-11. Work it out. Write a way to compose each of the given numbers. Write the numbers.

Instructions Practice

1-6. Draw rectangles around the balls to show one way to take apart the given numbers. Write the numbers. and and and

Instructions Practice 7-9. Draw rectangles around the flowers to show three ways to take apart 7. Write the numbers.

Instructions Practice 10-12. Draw rectangles around the insects to show three ways to take apart 9. Write the numbers.

Problem Solving

Instructions

b. Write three ways to make that number. and and and

1. a. Count the books. Write the number in the yellow box.

and and

Instructions

and

2. a. Count the sheep in the first row. Write the number in the yellow box.

b. Draw rectangles around the sheep in the three rows to show three ways to make that number.

c. Write the numbers.

Instructions

b. Write three ways to make that number. and and and

3. a. Count the team members. Write the number in the yellow box.

and

and

Instructions

and

4. a. Count the snacks in the first row. Write the number in the yellow box.

b. Draw rectangles around the snacks in the three rows to show three ways to make that number.

c. Write the numbers.

2 Addition

1 Addition Stories

Instructions Present

Show and model the story: three students are on the bus. One student joins them. How many students are there in all?

Instructions Practice

2. Four children play in the garden. One child joins them. How many children are there in all?

3. My parents, sister, and I are having dinner. My grandmother joins us. How many people are there at dinner?

4. The hen lays two eggs. Later it lays one more egg. How many eggs are there in all?

5. Dad buys three watermelons. He adds one more watermelon. How many watermelons does he buy?

Instructions Practice

6. Adam buys a shirt, T-shirt and a tie. How many pieces of clothes does he buy?

7. Tom buys one burger and a soft drink. He adds one more burger and soft drink. How many food items does he buy?

2 Addition Using the and the Symbols

Instructions Present Count and circle the first group of birds. One bird joins them. Now we have four birds in all. 3 plus 1 equals 4. 3 1

Instructions Practice 2- 13. a. Circle each group. Count the group and write the number.

b. Write how many there are in all.

c. Read the equation out loud.

Instructions Creativity and Math

a. Draw two groups of lollipops.

b. Write the numbers of each group.

c. Write how many there are in all.

3 Addition to make 10

Instructions Present

Show the two groups of balls. Circle the groups and count the balls in each group. Write the numbers to show how you made 10. 5 5

Instructions Practice 2- 10. a. Circle each group. Count the group and write the number.

b. Write how many there are in all.

c. Read the equation out loud.

Instructions Practice 11-12. a. Count the flowers in the first group. Write the number.

b. Draw more flowers in the second group to make 10.

c. Write how many there are in all.

d. Read the equation out loud.

Instructions Creativity and Math

a. Draw two groups of balloons that add up to 10.

b. Write the numbers of each group.

c. Write how many there are in all.

AdditionUpto10

Instructions

1-17. a. Circle each group. Count the objects in the group and write the number.

b. Write how many there are in all.

c. Read the equation out loud.

Problem Solving

Instructions

1. Sara cleans the beach. Tom joins her.

a. Write how many children there are in all.

b. Read the equation out loud.

Instructions

2-3. Some students eat in the school canteen. One more student joins them.

a. Circle the students sitting on the tables and write how many there are.

b. Circle the boys who join them and write how many there are.

c. Write the equation to tell how many students there are in all.

d. Read the equation out loud.

Instructions

4. Sam has caught some fish. He catches one more fish. Write the equation to tell how many fish he has in all.

Instructions

5. Sisters and brothers play at the park.

a. Circle the girls and write how many girls there are.

b. Circle the boys and write how many boys there are.

c. Write the equation to tell how many children there are in all.

d. Read the equation out loud.

3 Subtraction

Subtraction Stories

Instructions Present Explain the story. Ten birds are on the cable. One bird flies away. Nine remain. 10 take away 1. 9 are left.

Instructions Practice

2. There are four fish in the sea. One goes away. Cross one fish. How many are left?

3. There are five pieces of cheese on the table. The mouse takes one away. How many pieces of cheese are left?

Instructions Practice

4. There are seven cupcakes on the counter. Two are sold. Cross two cupcakes. How many cupcakes are left?

5. The hen lays eight eggs. Four hatch. Cross four eggs. How many eggs are left?

Instructions Practice

6. There are nine pairs of shoes on the shelves. Three are sold. Cross three pairs. How many pairs of shoes are left?

7. There are nine bags of cat food on the table. Five are taken away. Cross five bags. How many bags are left?

2

Subtraction Using the and the Symbols

Instructions Present

Model three cups on the table. One cup has broken. Two cups are left. 3 minus 1 equals 2.

Instructions Practice

2. There are four eggs in the fridge. I eat two eggs. How many eggs are left?

3. There are five chicks on the field. One goes away. How many chicks are left?

4. Three children are talking. One child goes home. How many children are left?

Instructions Practice

5. A tailor has six buttons. He uses three buttons. How many buttons are left?

6. Dad buys eight slices of pizza. We eat four slices. How many slices are left?

7. The baker has ten loaves of bread. He sells six loaves. How many loaves are left?

Instructions Practice

8. Toms has seven coins in his pocket. He spends four coins. How many coins are left?

9. We have five apples on the table. We eat three apples. How many apples are left?

10. There are eight planes at the airport. Six planes fly away. How many planes are left?

Instructions Practice

11. There are ten bees. Five bees fly away. How many bees are left?

12. There are six flowers. One flower is picked. How many flowers are left?

13. There are five butterflies. Two butterflies go away. How many butterflies are left?

Instructions Creativity and Math

a. Draw five balloons. Mark three of them with .

b. Write the total number of ballons.

c. Write the number of balloons marked with .

d. Write how many balloons are left.

Subtraction

Revision

Instructions

1-17.

a. Write the total number of objects in the first empty box.

b. Write the number of objects that are marked with in the second box.

c. Write how many objects are left in the third box.

d. Read the equation out loud.

Problem Solving

Instructions 1. My friends and I ordered a 10-slice pizza. We ate four slices. How many slices are left? Write the equation.

Instructions 2. There are seven boxes on the ground. Two boxes are being loaded into the truck. How many boxes are left on the ground? Write the equation.

Instructions

3. Aya has six crayons. Adam borrows one crayon. How many crayons are left? Write the equation.

Instructions

4. There are ten soft drinks in the fridge. We drink four of them. How many soft drinks are left? Write the equation.

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Explore Math - Operations and Algebraic Thinking

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Copyright © 2024 Ugarit Publishing ISBN: 978-9948-757-06-1

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Dive into the world of numbers with Explore Math, a comprehensive early childhood education coursebook designed for children aged 5 and above. This engaging resource cultivates fundamental mathematical skills while igniting a lifelong curiosity for numbers and cardinality.

Discover a treasure trove of practical and real-life applications, empowering children to grasp:

• Composition and decomposition of numbers up to 10

• Addition

• Subtraction

• Problem-solving strategies that encourage critical thinking

• Creative exploration through art

Explore Math takes the children on a journey where learning meets real life, fostering a deep understanding of math while nurturing creativity and problem-solving abilities.