All lesson plans

Area and Perimeter with Blocks

Math · Grades 4-7

Minecraft turns abstract area and perimeter into something students can walk through and count. Because every block is a 1x1 unit, a floor of blocks is a literal area model and the edge is a literal perimeter.

Objective

Students measure, calculate and verify area and perimeter of rectangles and composite shapes by building them block by block.

Materials

Steps

  1. Give each student a target rectangle (for example 7x4). Have them predict the area and perimeter first.
  2. Build the rectangle floor and count blocks to verify area (length x width).
  3. Walk the edge and count blocks to verify perimeter (2 x (length + width)).
  4. Build a composite L-shape and split it into two rectangles to find total area.
  5. Challenge: find two different rectangles with the same area but different perimeter.

Discussion questions

Variations

For older students, add volume by building up (length x width x height) and compare surface area to volume.