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What are we going to do? What does measure mean? Measure means __________.

Name. Learning Objective. We will measure 1 the length of an object using different units. CFU. What are we going to do? What does measure mean? Measure means __________. Activate Prior Knowledge. Measure the length of the objects below using the paper clips. 1.

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What are we going to do? What does measure mean? Measure means __________.

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  1. Name Learning Objective We will measure1 the length of an object using different units. CFU What are we going to do? What does measure mean? Measure means __________. Activate Prior Knowledge Measure the length of the objects below using the paper clips. 1. The fork is ______ paper clips long. 2. Make Connection Students, you already know how to measure length using objects. Now, we will measure the length of objects using inches and centimeters. The spoon is ______ paper clips long. 1 finding the number that shows the size of something Vocabulary

  2. Concept Development • Length is how long something is. • The length of an object can be measured using rulers with different units. • Inches (in) and centimeters (cm) are units that can be used to measure length. Measuring Length Using Different Units CFU Which of the following objects measures two centimeters? How do you know? A B In your own words what is length? “Length means ______________.”

  3. Concept Development (Clarification and CFU) • Length is how long something is. • When an object does not measure to an exact unit, measure it to the nearest2 unit. CFU Which of the following objects needs to be measured to the nearest centimeter? How do you know? A B In your own words what is measuring to the nearest unit? “Measuring to the nearest unit is _____.” 2 closest Vocabulary

  4. Skill Development/Guided Practice • Length is how long something is. • When an object does not measure to an exact unit, measure it to the nearest unit. Measure the length of an object using different units. Measure the object using an inch ruler. (write) Hint: Make sure to line up the zero on the left. Measure the object using a centimeter ruler. (write) Hint: Make sure to line up the zero on the left. Read the lengths aloud. 1 2 3 1. The scissors are ______ inches long. The scissors are ______ centimeters long. 2. The crayon is ______ inches long. The crayon is ______ centimeters long. How did I/you measure the object using the inch ruler? How did I/you measure the object using the centimeter ruler? CFU 1 2

  5. Skill Development/Guided Practice (continued) • Length is how long something is. • When an object does not measure to an exact unit, measure it to the nearest unit. Measure the length of an object using different units. Measure the object using an inch ruler. (write) Hint: Make sure to line up the zero on the left. Measure the object using a centimeter ruler. (write) Hint: Make sure to line up the zero on the left. Read the lengths aloud. 1 2 3. 3 The cane is ______ inches long. The cane is ______ centimeters long. 4. The screwdriver is ______ inches long. The screwdriver is ______ centimeters long. In your own words, why are there more centimeters in the length of the objects than inches? ________________________________________________________________ How did I/you measure the object using inches? How did I/you measure the object using centimeters? CFU 1 2

  6. Relevance • Length is how long something is. • When an object does not measure to an exact unit, measure it to the nearest unit. Measuring the length of an object using different units will help you better understand the different units that we use. 1 The crayon is 3 inches long. It is also 8 centimeters long. Measuring the length of an object using different units will help you do well on tests. 2 Sample Test Question: 72. Measure the length of the bar below in inches and centimeters. A 9 inches and 4 centimeters B 3 inches and 8 centimeters C 8 inches and 3 centimeters D 3 inches and 3 centimeters Does anyone else have another reason why it is relevant to measure the length of an object using different units? (Pair-Share) Why is it relevant to measure the length of objects using different units? You may give one of my reasons or one of your own. Which reason is more relevant to you? Why? CFU

  7. Length is how long something is. • When an object does not measure to an exact unit, measure it to the nearest unit. Skill Closure Measure the length of an object using different units. Measure the object using an inch ruler. (write) Hint: Make sure to line up the zero on the left. Measure the object using a centimeter ruler. (write) Hint: Make sure to line up the zero on the left. Read the lengths aloud. 1 2 3 Word Bank measure length units inches centimeters 1. The key is ______ inches long. The key is ______ centimeters long. Access Common Core Rashid and Marco are measuring a wooden bar above. Rashid measured it using an inch ruler and got 5 inches. Marco measured it using a centimeter ruler and got 5 centimeters. Mrs. Ramirez says that one of them made a mistake. Explain who made a mistake and why. ________________________________________________________ ________________________________________________________ ________________________________________________________ Summary Closure What did you learn today about measuring the length of an object using different units? (Pair-Share) Use words from the word bank.

  8. Name Independent Practice • Length is how long something is. • When an object does not measure to an exact unit, measure it to the nearest unit. Measure the length of an object using different units. Measure the object using an inch ruler. (write) Hint: Make sure to line up the zero on the left. Measure the object using a centimeter ruler. (write) Hint: Make sure to line up the zero on the left. Read the lengths aloud. 1 2 3 1. The key is ______ inches long. The key is ______ centimeters long. 2. The mat is ______ inches long. The mat is ______ centimeters long.

  9. Name Periodic Review 1 The battery is ______ inches long. The battery is ______ centimeters long. Access Common Core Alex measured the object below and got 6 cm. Explain the mistake that he made. ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________

  10. Name Periodic Review 2 The camera is ______ inches long. The camera is ______ centimeters long. Access Common Core Using your ruler, measure four objects in the classroom using both centimeters and inches. If the object is longer than your ruler, use a meter stick and a yardstick, or use a tape measure. Circle the longest object.

  11. Name Periodic Review 3 The phone is ______ inches long. The phone is ______ centimeters long. Access Common Core Antoine measured the pen below. She says that it measures 5 inches. She thinks that it will be 13 centimeters long. Is she correct? Why or why not? ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________

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