Primary Grade 2 Math: Fix Broken Visual Pattern Errors (Brick, Tile, Block Designs)

Question

Muster untersuchen: 1. Wo sind die Fehler? Kreise ein und male richtig. (Examine the patterns: 1. Where are the mistakes? Circle them and draw correctly. There are 3 sub-questions a, b, c with pattern pairs: a is a brick wall pattern, b is a square tile pattern, c is a triangular/rectangle tile pattern.)

Accepted Answer

a) Circled errors: The 3rd row leftmost purple brick, the 4th row leftmost purple brick. Correct pattern: Each row should offset from the row above, with bricks aligned to fill gaps, so replace the two purple bricks with orange bricks matching the offset pattern. b) Circled error: The single green tile in the 3rd row, 3rd column. Correct pattern: Replace it with a blue tile to maintain the repeating 2x2 color block pattern (orange-blue, blue-orange, green-yellow, yellow-green). c) Circled errors: The 2nd row middle yellow rectangle, the 4th row middle yellow rectangle. Correct pattern: Replace these yellow rectangles with red rectangles to maintain the vertical alternating red-green triangular block + red-yellow vertical column pattern.

Answer

Step 1: Analyze sub-question a: Identify the brick wall pattern rule: Each row of bricks is offset by half a brick from the row above, creating a staggered, gap-free alignment. Compare the left pattern to the empty grid on the right to spot misaligned bricks (the two purple bricks break the offset fill pattern). Step 2: Analyze sub-question b: Identify the repeating tile rule: The pattern uses 2x2 color blocks that repeat across the square. The green tile in the center breaks the 2x2 blue-orange block that should be in that position. Step 3: Analyze sub-question c: Identify the vertical column pattern rule: The grid has alternating vertical columns of red-green triangular tiles and red-yellow rectangular tiles. The two yellow rectangles are in columns that should be all red, breaking the vertical pattern. Step 4: Correct each error by replacing the mismatched tiles with the correct color to follow the identified pattern rules.