Number Line Story Problems

In this video, Mr. NZ from Wedgewood School teaches second graders how to use number lines for addition and subtraction. The lesson begins with an introduction to the materials needed, such as math mats and dry erase markers. Mr. NZ explains the properties of number lines, including tick marks and equal spacing. The lesson reviews how to handle number lines with missing numbers and progresses to solving number stories using number lines. Students practice solving problems involving addition and subtraction, reinforcing their understanding of number lines.

What materials do you need for today's math lesson?

• A ruler and a pencil

• Math mats, a sheet protector, and a dry erase marker

• A calculator and a notebook

• A textbook and a pen

What is a key feature of a number line?

• It only starts at zero

• It has arrows on each end indicating it goes on forever

• It is always vertical

• It has numbers only up to 10

How do you find missing numbers on a number line?

• By drawing new tick marks

• By using a calculator

• By counting up or down from a known number

• By guessing the numbers

What is the first step in solving a number story using a number line?

• Circle the numbers in the story

• Write down the answer

• Draw a new number line

• Use a calculator

In Bobby's money story, how many hops do you make on the number line?

• 3 hops

• 5 hops

• 7 hops

• 10 hops

What is the final answer to Bobby's money story?

• $19

• $14

• $25

• $20

In Colton's crayon story, what is the starting number on the number line?

• 10

• 17

• 14

• 7

How many crayons does Colton have after finding more?

• 20

• 17

• 14

• 10

In Kira's muffin story, what operation do you perform on the number line?

• Addition

• Subtraction

• Multiplication

• Division

How many muffins does Kira have left after her friends eat some?

• 12

• 16

• 4

• 8