SALTA 3rd grade

3.MD.5 3.MD.6 3.MD.7

Strand: Measurement and Data- Third grade students will understand concepts of area and relate area to multiplication and addition.

Topic 6: Connect Area to Multiplication and Addition

Topic 5:

• area • unit square • square unit • estimate

Standard 3.MD.5 Recognize area as an attribute of plane figures and understand concepts of area measurement.

Pick A Project: City Planning, Community, Carpentry, Card Games

a. A square with side length one unit, called “a unit square,” is said to have “one square unit” of area, and can be used to measure area. b. A plane figure which can be covered without gaps or overlaps by n unit squares is said to have an area of n square units.

No 3-Act Task for Topic 6

6-1 Cover Regions 6-2 Area: Nonstandard Units 6-3 Area: Standard Units

Standard 3.MD.6 Measure area by counting unit squares (square centimeters, square meters, square inches, square feet, and improvised units).

6-4 Area of Squares and Rectangles 6-5 Apply Properties: Area and the Distributive Property 6-6 Apply Properties: Area of Irregular Shapes 6-7 Problem Solving: Look for and

Standard 3.MD.7 Relate area to the operations of multiplication and addition (refer to 3.OA.5).

a. Find the area of a rectangle with whole-number side lengths by tiling it, and show that the area is the same as would be found by multiplying the side lengths. b. Multiply side lengths to find areas of rectangles with whole-number side lengths in the context of solving real-world and mathematical problems, and represent whole-number products as rectangular areas in mathematical reasoning. c. Use tiling to show in a concrete case that the area of a rectangle with whole-number side lengths a and b + c is the sum of a x b and a x c. Use area models to represent the distributive property in mathematical reasoning. d. Recognize area as additive. Find areas of rectilinear figures by decomposing them into non-overlapping rectangles and adding the areas of the non- overlapping parts, applying this technique to solve real-world problems.

Use

Structure

Topic 6: Manipulatives • Two-color tiles

Assessment Options: Topic 6 Assessment – Connect Area to Multiplication and Addition (print or online) Topic 6 Performance Assessment – Connect Area to Multiplication and Addition Team Created Assessment

Assessment Tasks – Topic 6

Procedural Check

Application Task