Content Area: Math

 

Index: 4.1B Grade 4 CPI 8

 

Standard: 4.1 - Number and Numerical Operations

 

Strand: B - Numerical Operations

 

Cumulative Progress Indicator: 8 -  The student will check the reasonableness of results of computations.

 

Grade: 4

 

Sample Activities:

 

·        Students discuss this problem from the NCTM Standards (p. 45): Three fourth grade teachers decided to take their classes on a picnic. Mr. Clark spent $26.94 for refreshments. He used his calculator to see how much the other two teachers should pay him so that all three could share the cost equally. He figured they each owed him $13.47. Is his answer reasonable? As a follow-up individual assessment, they write about how they might find an answer.