Unit 2 Discovery Task - "A Question from Italy"
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a_question_from_italy.pdf |
DAY 9 (5.3-1 & 5.3-2)
Multiplying by Powers of 10 & Estimating Products
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- An OVERESTIMATE is more than the actual product; usually, both factors have been rounded up.
- An UNDERESTIMATE is less than the actual product; usually, both factors have been rounded down.
- The BEST ESTIMATE means the estimate that is closest to the actual amount, the one that has been changed the least.
DAY 10 (5.3-3)
Multiplying using Partial Products
FACTOR x factor = product
- PARTIAL PRODUCTS are part of the total product. They are found by decomposing factors into expanded form and then multiplying the partial factors. All parts of one factor must be multiplied by all parts of the other factor.
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Another way to look at partial products
DAY 11 (5.3-4 & 5.3-5)
Multiplying Using the Multiplication Algorithm
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DAY 12 (5.3-6)
Solving Word Problems with Multiplication
- VARIABLES are letters (usually lower-case) used to represent one or more missing parts of a mathematical equation.
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Multiplication Stories
DAY 13 (5.4-1)
Multiplying Decimals by Powers of 10
Stop at 2:30 (before she teaches about dividing by 0.1)
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DAY 14 (5.4-2 & 6.7-3)
Estimating Products with Decimals
DAY 15 (5.4-3)
Use Models to Multiply a Decimal by a whole number
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DAY 16 (5.4-4)
Use Place Value to Multiply a Decimal by a whole number
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DAY 17 (5.4-5)
Use Grids to Multiply two decimal numbers
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DAY 18 (5.4-6)
Use Partial Product Models to Multiply two decimal numbers
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DAY 19 (5.4-7 & 5.4-8)
Use Properties of Multiplication, Estimation, Number Sense, and Reasoning
To Multiply two decimal numbers
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DAY 20 (5.4-9 & 6.7-4)
Multiply decimal numbers using the standard algorithm
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