MA.3.GR.2.1: Explore area as an attribute of a two-dimensional figure by covering…
Explore area as an attribute of a two-dimensional figure by covering the figure with unit squares without gaps or overlaps, and find areas of rectangles by counting unit squares.
The Florida's B.E.S.T. Standards for Mathematics outcome MA.3.GR.2.1 (Geometric Reasoning) for Grade 3 says: “Explore area as an attribute of a two-dimensional figure by covering the figure with unit squares without gaps or overlaps, and find areas of rectangles by counting unit squares.” This Fieldbook unit teaches it hands-on, with everyday materials and a printable teacher guide and student sheet for every lesson. Official wording: Florida's B.E.S.T. Standards for Mathematics.
Fence It, Fill It: Area and Perimeter Grades 3–4
Which mat is really the biggest? Does the same fence always hold the same garden? Can the same rug need more edging? Four lessons where students tile, stretch rope and chalk the schoolyard to find out that area and perimeter measure different things.
- Which mat is the biggest? 50–60 min
Teams cover three taped mats with sticky notes and find that the long, thin mat that looks biggest is the same size as a small square one. Students explain area as the number of unit squares that cover a shape, and find it faster by multiplying rows by columns.
Printable practice for MA.3.GR.2.1
These pages practise a closely related idea; the match to MA.3.GR.2.1 is partial.
- Fence It, Fill It: Area and Perimeter workbook included with the unit
1 word wall, 1 English-support page, 1 practice page, 1 reading, 1 unit review, 1 unit test, with answer keys.
- Grade 3 Common Core Math: Geometry and Measurement printable pack
2 practice pages, 1 activity, 1 assessment, with answer keys. Free sample.
Compared with Common Core: 3.MD.C.5 (partial).
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