Magnitude estimates

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Making Magnitude Estimates

Rounding and estimating using powers of 10

CFU:What are we going to do today? What are we going to (skill)?

(universal experience or sub-skill):

We already know how to count by tens, hundreds, and thouands. Let’s practice.

We already know how to round to the nearest 10, 100, or 1,000.

Let’s practice: 47,

Activate Prior Knowledge(APK)

CFU (include connection to LO)

(universal experience or sub-skill):

Look to the place Mark the space

Go to the right  Start the fight

0 to 4, don't change the score 5 to 9, increase the line

Rounding PoemRound 4,769 to the nearest hundred:

4,769

Magnitude Estimate: a rough estimate. It tells whether the answer should be in the 10’s, 100’s, 1,000’s, and so on.

Frontload Vocabulary

Step 1: look to the largest place value of each number

Step 2: What place values are they in? Step 3: Add the two largest numbers

together Step 4: What place value are they in? The answer is your magnitude estimate.

Magnitude Estimates for Addition and SubtractionCFU

Practice on Journal page 45

Step 1: Round both factors to the nearest multiple of a power of 10

Step 2: Find the product of the rounded numbers

The answer is your magnitude estimate.

Magnitude Estimates for Multiplication and DivisionCFU

Practice on journal page 47

Where would this skill be helpful in real life?

ImportanceCFU: Does anyone else have any other reason as to why it is important? Which reason is most important to you? Why? You can give me my reason or your reason.

Skill Development

(steps or processes)

CFU (strategic)

Guided Practice

(steps or processes)

Closure

(Concept, Skill, Importance-pair-share)

Independent Practice