Constructing and Checking Rectangle PQRS

Create the full Grade 6 construction lesson for Section 8.3. Use Yuvan as the only presenter. Show the construction in sequence and preserve all measurements. Mission: construct rectangle PQRS with length 6 cm and breadth 4 cm. 1. PLAN: a rectangle has equal opposite sides and all four angles equal to 90°. 2. STEP 1 — Draw PQ = 6 cm using a ruler. Label P and Q. 3. STEP 2 — Construct a perpendicular to PQ through P and mark ∠P = 90°. 4. STEP 3 — Measure PS = 4 cm along the perpendicular and mark S. 5. STEP 4 — Construct a perpendicular to PQ through Q and mark ∠Q = 90°. 6. STEP 5 — Mark R on the perpendicular through Q so QR = 4 cm. 7. STEP 6 — Join R to S with a ruler to complete rectangle PQRS. Keep vertices in order P → Q → R → S around the boundary. 8. VERIFY sides: PQ = 6 cm, QR = 4 cm, RS = 6 cm and SP = 4 cm. Highlight PQ = RS and QR = SP. 9. VERIFY angles: ∠P = ∠Q = ∠R = ∠S = 90°. Only after checking both properties, display “RECTANGLE ✓”. 10. Reasoning challenge: show a four-sided figure with all angles 90° but opposite sides represented as unequal. Ask whether it satisfies the rectangle properties. Pause, then explain that both conditions are required: opposite sides equal and all angles 90°. 11. Quick challenge: if PQ = 8 cm and PS = 3 cm, ask what the opposite sides should measure. Pause, then reveal QR = 3 cm and RS = 8 cm. Memory card: DRAW PQ = 6 cm → PERPENDICULAR THROUGH P → MARK PS = 4 cm → PERPENDICULAR THROUGH Q → MARK QR = 4 cm → JOIN R TO S → VERIFY. Keep the 6 cm and 4 cm sides correct, all angles exactly 90°, and opposite sides equal. Do not teach square construction in this video. Do not add area, perimeter, diagonals or unrelated geometry.