Teach estimation of coin values and quantities using a 'more than'/'less than' framework rather than counting and rounding¶

Strategy · All strategies
Evidence · no claims cited

Description¶

For the estimation objective, the guide recommends that children practice judging collections as "more than" or "less than" an amount even when they cannot count the entire collection. Children "should be encouraged to estimate (frequently using the "more than"/"less than" framework) amounts of money, lengths, numbers of objects, etc. that they are not yet able to count exactly." The notes warn that children too often estimate by counting an entire collection then rounding the result.

Design Implications¶

Context¶

Requirements¶

• Practice opportunities throughout the year with amounts children cannot yet count exactly

Constraints¶

Target Learners¶

• First-grade students

Target Learning Goals¶

• Estimating the value of a collection of coins and other quantities

Related Strategies¶

• Numbers To 100
• Counting Collections
• Dot Card Flash
• Which One Doesn’t Belong?
• Multiple Representations: Number Line

Examples¶

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Key Sources¶

• Kasten, Margaret; Meiring, Steve; Mikesell, Anne. (1997). Mathematics. Competency-Based Education Assessment Series. https://eric.ed.gov/?id=ED417935