Mathematics
Measurement and time
Area
Educator section
Memorandum
1. A: ± 20 squares = 20 × 25 mm²
B: ± 10 squares = 10 × 25 mm²
Leaner section
Content
Activity: to calculate area [lo 4.8.2]
1. Now determine the area of the following objects by using the “square sheet” method (each square is 5 mm by 5 mm).
a: ___________________________________________________________________
b: ___________________________________________________________________
c: ___________________________________________________________________
d: ___________________________________________________________________
e: ___________________________________________________________________
f: ___________________________________________________________________
g: ___________________________________________________________________
(Discuss the method you used with a friend).
Assessment
Learning Outcome 4: The learner will be able to use appropriate measuring units, instruments and formulae in a variety of contexts.
Assessment Standard 4.8: We know this when the learner investigates and approximates (alone and/or as a member of a group or team):
4.8.2: area of polygons (using square grids) in order to develop rules for calculating the area of squares and rectangles.