Grade 3 Mathematics — Term 1, Week 11

5 day-plan(s) · WeLearn Math

Grade 3 Mathematics · Term 1, Week 11 · 60 minutes

Objectives	Students will be able to: (1) identify right, acute, obtuse angles; (2) use a right-angle tester; (3) find angles in the environment.
Materials	Angle tester (paper), protractor (intro), pictures of angles.
Key vocabulary	angle, right angle, acute, obtuse, degree
Engage (starter)	(10 min) "A right angle is a square corner. Look at the door frame!"
Develop (main)	(35 min) 1. Make a right-angle tester. 2. Hunt for angles in classroom. 3. Classify drawn angles. 4. Draw examples. 5. Worksheet.
Plenary (close)	(10 min) Angle sorting game.
Assessment	Correct identification.
Teacher notes	Use protractor next week.

Grade 3 Mathematics · Term 1, Week 11 · 60 minutes

Objectives	Students will be able to: (1) use a protractor to measure angles to nearest 5 degrees; (2) draw angles given degrees; (3) estimate angle size.
Materials	Protractors, worksheets, whiteboards.
Key vocabulary	protractor, degree, measure, estimate
Engage (starter)	(10 min) Show a protractor. "This measures how wide an angle opens."
Develop (main)	(35 min) 1. Guide how to align protractor. 2. Measure given angles. 3. Draw angles (e.g., 45, 90 degrees). 4. Partner check. 5. Worksheet.
Plenary (close)	(10 min) Angle estimation challenge: guess then measure.
Assessment	Measurements within 5 degrees; correct drawing.
Teacher notes	Patience and practice.

Grade 3 Mathematics · Term 1, Week 11 · 60 minutes

Objectives	Students will be able to: (1) find perimeter of shapes with missing sides; (2) use formula P = 2(l + w); (3) solve problems.
Materials	Grid paper, rulers, shape cut-outs.
Key vocabulary	perimeter, rectilinear, missing side
Engage (starter)	(10 min) Show a shape with one missing side length. "Use the given sides to figure it out."
Develop (main)	(35 min) 1. Practice finding missing lengths. 2. Apply formula. 3. Word problems. 4. Design a shape with a given perimeter. 5. Worksheet.
Plenary (close)	(10 min) Share designs; discuss strategies.
Assessment	Correct perimeter calculations.
Teacher notes	Build spatial reasoning.

Grade 3 Mathematics · Term 1, Week 11 · 60 minutes

Objectives	Students will be able to: (1) use A = l x w to find area; (2) find missing side given area; (3) solve real-life problems.
Materials	Grid paper, formula cards, worksheets.
Key vocabulary	area, length, width, square unit
Engage (starter)	(10 min) "If a room is 5 m long and 4 m wide, area is 5x4 = 20 sq m."
Develop (main)	(35 min) 1. Practice with and without grids. 2. Given area and one side, find the other. 3. Word problems. 4. Create a "Dream House" floor plan with area calculations. 5. Share.
Plenary (close)	(10 min) Gallery walk of floor plans.
Assessment	Correct area calculations.
Teacher notes	Link to real estate.

Grade 3 Mathematics · Term 1, Week 11 · 60 minutes

Objectives	Students will be able to: (1) review the week's topics; (2) complete a mixed worksheet; (3) self-assess.
Materials	Worksheet, answer key, reflection sheet.
Key vocabulary	review
Engage (starter)	(10 min) Quick quiz: "Measure this angle. Find perimeter of a 6 by 3 rectangle."
Develop (main)	(35 min) 1. Worksheet. 2. Self-check. 3. Identify areas for improvement. 4. Write a tip for a friend. 5. Share.
Plenary (close)	(10 min) Share tips.
Assessment	Worksheet score.
Teacher notes	Support those struggling.