Math Test Tomorrow

We have been working very hard on partitioning shapes into equal parts as well as practicing several mental math strategies for +/- numbers 0-20.

Partitioning means to divide shapes into EQUAL parts.

Halves (half, 1/2)- a shape divided into 2 EQUAL parts. A half is 1 of the 2 equal parts.

Thirds (1/3)- a shape divided into 3 equal parts. A third is 1 of 3 equal parts.

Fourths (1/4) – a shape divided into 4 EQUAL parts. A fourth is 1 of the 4 equal parts.

Students need to be able to partition rectangles and circles into halves, thirds, and fourths SEVERAL different ways.

Mental Math Strategies to know:

  • Make a 10
  • Doubles, Doubles +/-1
  • Near 10
  • Fact Families
  • Decomposing

Here is a copy of the 2nd+Grade+Pre-Test+Unit+8

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