Teaching article
Area counts the equal units covering a region
Cover a defined region without gaps or overlaps and count the equal covering units.
Lay square units inside a defined region and inspect the coverage. The task concerns the surface within the boundary, which needs a different counting approach from adding lengths around its edge.
State the region to cover. Tile it systematically. Count squares using rows and columns.
Cover the space without gaps
Three rows of four identical squares cover twelve square units.
Cover the defined region with equal square units. Counting boundary marks answers a different question from measuring the region's area.
What does one counted unit represent? Use pre-cut squares and a clear boundary.
Length units and square area units are not interchangeable.
Resources
- Reflection Journal Template — Use the blank reflection space for observations; write the measurement units and setup separately.
Further reading
Read next
- Same area, different perimeter: rearrange six squares
- A small survey starts with an answerable question
- Possible or impossible depends on the setup
Explore Money, measurement and data. Browse all teaching articles.