Measurement and geometry

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).

Read and interpret line plots. Also, make some graphs of your own!

Area is how we think about how much space something takes in two dimensions, such as comparing how much land one property takes up versus another. In this tutorial, we'll take a look at how area is measured.

Transition from counting unit squares to multiplying side length to find area. Measure side lengths with a ruler to find area.

Find area of rectangles by multiplying side lengths. Find a missing side length of a rectangle when given the other side length and area. Compare areas of rectangles presented in images or contexts.

Have you ever wondered how much fencing you need to surround a plot of land? No? Well, you should still go through this tutorial just in case. You'll learn what perimeter is and how to calculate it.

Compare the areas and perimeters of rectangles when given a context or picture.

Classify quadrilaterals, including rectangles, rhombuses, and squares. See what attributes they have in common and which ones make them unique.