Measuring Lengths: A 2nd Grade Challenge

In this video tutorial, Teacher Mike from Kids Academy explains how to compare the lengths of objects using centimeters. The lesson covers a strategy for measuring two objects, identifying the longer one, and calculating the difference in length through subtraction. Examples include comparing nails, a paperclip and an eraser, and a marker and a pen. The video concludes with a recap of the method and encourages viewers to subscribe for more content.

What is the first step in comparing the length of two objects?

• Subtract the lengths directly

• Measure both objects

• Guess which is longer

• Ask a friend

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How do you find out how much longer one object is than another?

• By guessing the difference

• By subtracting the length of the shorter object from the longer one

• By measuring only the longer object

• By adding their lengths

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If one nail is 5 cm and another is 3 cm, how much longer is the first nail?

• 2 cm

• 3 cm

• 5 cm

• 8 cm

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What is the length of a paperclip if it measures from 0 to 2 cm?

• 0 cm

• 1 cm

• 3 cm

• 2 cm

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CCSS.2.MD.A.3

How much longer is an eraser measuring 5 cm than a paperclip measuring 2 cm?

• 5 cm

• 3 cm

• 2 cm

• 7 cm

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CCSS.2.MD.A.4

What is the correct way to subtract to find the difference in length?

• Add both lengths

• Multiply both lengths

• Longer length - Shorter length

• Shorter length - Longer length

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If a marker is 8 cm long, how far does it measure from the start?

• 8 to 16 cm

• 0 to 4 cm

• 4 to 8 cm

• 0 to 8 cm

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What is the difference in length between a 12 cm pen and an 8 cm marker?

• 2 cm

• 4 cm

• 6 cm

• 8 cm

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CCSS.2.MD.A.4

Which object is longer, a pen measuring 12 cm or a marker measuring 8 cm?

• Pen

• Marker

• Both are equal

• Cannot be determined

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CCSS.2.MD.A.4

How do you arrange numbers for subtraction when comparing lengths?

• Do not need to arrange

• Larger number on top

• Smaller number on top

• Randomly

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CCSS.2.MD.A.4