Math+1.3.A4

Math 1.3.A4 Determines if a Real-World problem calls for exact or approximate answer and performs appropriate computation methods using various computational methods. [|NCTM Math Challenge: Beating Heart] This could be used with whole group instruction or in small groups. Students are asked questions such as, "Have you been alive for a million minutes?" Great for estimating large numbers.

[|NCTM Math Challenge: Line Up] This is very similar to the one above. Students estimate and measure time. [|AAAMath: Estimation] Several lessons on estimation.