Maths Mela, period by period — fitted to your timetable.
Tell Meyy your periods and their length; it plans every chapter of Maths Mela to fit, and you tick off sections as you teach.
Border Lengths: Discovering Perimeter Through the Quilt
Lesson
Students often confuse perimeter with area at this first meeting — watch for those who count squares inside the shape rather than steps along the boundary. For Let Us Do Q2, prompt students who are stuck to start with one side length and reason about what the remaining sides must add up to. Encourage them to record two or three different valid rectangles to begin building the independence of area and perimeter.
0–10The teacher introduces the quilt-border story and poses Opening context, p.142 ("Tick the lace option … cover the entire border…."). Students reason aloud about which lace length matches the total boundary, connecting the idea of 'going all the way around' to the word perimeter.
10–22Students work on Let Us Do Q1, p.142 ("Find the perimeter of the following shapes…."). They count sides, note that all sides are equal, and arrive at the shortcut of multiplying side length by the number of sides. Pairs compare their working.
22–40Students attempt Let Us Do Q2, p.142 ("Draw two rectangles each having the following perimeters…."). They work on squared paper, choosing different length-breadth pairs that satisfy each perimeter, and share their drawings to see that more than one rectangle is possible.
Opening context, p.142 — Tick the lace option (red 40 units / green 50 units / blue 25 units) that would cover the entire border of the quilt.
A square quilt has a side of 8 units. Meera wants to stitch a lace border all the way around it. Which length of lace is exactly enough to go around the entire border?
- A 16 units
- B 24 units
- C 32 units
- D 64 units
C. 32 units
What each wrong option reveals
- A The student added only two sides (8 + 8 = 16), forgetting the other two sides of the square.
- B The student multiplied by 3 instead of 4, perhaps counting only three visible sides.
- D The student multiplied 8 × 8 = 64, confusing perimeter with area.
Also saved as 7 periods or 9 periods.
- 2Tiling Tables: Which Shapes Cover Without Gaps?
Lesson - 3Unit Squares and Grids: Measuring Area by Counting
Lesson - 4Palms and Leaves: Estimating Area on a Grid
Lesson - 5Same Area, Different Border: Exploring Independence
Lesson - 6Drawing New Shapes: Perimeters Vary, Areas Stay Fixed
Lesson - 7Rows and Columns: Deriving Length × Breadth
Lesson - 8Applying the Formula: Real Objects and Word Problems
Lesson - 9The L-Shape Challenge: Decomposing Composite Figures
Lesson - 10Tile and Roll: The Perimeter-24 Game
Lesson - 11Quilt Showcase: Connecting Area, Perimeter, and Measurement
Lesson
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