zane addition, angles, counting, geometry, graphing, multiplication, numbers, subtraction, units 0 Comments

In 2nd grade, you learned to measure lengths. Now we can measure the length around the edge of an object (perimeter) and how much “space” something takes up on a flat surface (area).

## (1) Time

## (2) Mass

## (3) Volume

## (4) Bar graphs

## (5) Picture graphs

## (6) Line plots

## (13) Perimeter

## (16) Quadrilaterals

Visit Measurement and geometry (Khan Academy) to read more...