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At a Glance:
| Grades: | 5 |
|---|---|
| Subject: | Math |
| Topic: | Numbers and Operations in Base Ten; Place Value in Multiplication |
| Lesson Length: | 30 - 45 mins |
Standards / Framework:
What will students learn in this activity?
Students will explain the pattern of the number of zeros of the product when multiplying by powers of 10. Students will recognize that powers of 10 are represented as 10 with an exponent.
What should students know before this activity?
This can be used as an introductory lesson for multiplying by powers of 10.
How can teachers introduce this lesson?
- Read and discuss the sample comic.
- As each number is multiplied, what pattern do they notice?
- Discuss what powers of 10 are and how they are expressed with exponents.
What will students do?
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Have students choose a number between 1 and 9 and multiply that number by 4 powers of 10 (101, 102, 103, 104).
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Remind students that they can find the product by adding the same number of zeros as the power of ten, e.g., 14 x 102 can be solved by adding two zeros to the number they are multiplying by.
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Have students compare their products with a partner.
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- Using the sample comic as a guide, have students create a six-panel comic showing a number of their choosing multiplied by 5 powers of 10, one in each frame (101, 102, 103, 104, 105).
- Have students explain how the pattern of zeros works in the sixth panel.
How can teachers wrap up the lesson?
- Discuss how many zeros would be required for 1010 based on the way the pattern of zeros works.
- Display completed comics in a gallery walk or have students share their comics in small groups.
How can teachers differentiate this activity?
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Allow students to use the speech-to-text feature.
- Allow students to use the voiceover feature to read their comics aloud.
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Provide sentence frames as needed.
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Provide manipulatives and visuals as needed.
Magic School
Fairytale
