Practice and check
Worked example
Read each row left to right. Find how the first two patterns relate to the last, then check the other complete row. Keep positions black in exactly one pattern; shared black cells become white.
1. Keep positions black in exactly one pattern; shared black cells become white. → D
- Read one problem and its conditions before starting. Work without a timer, and keep the key visible where the task requires it.
- Keep positions black in exactly one pattern; shared black cells become white. Check every black cell. Use a rule that fits both complete rows, rather than choosing by resemblance.
- Keep positions black in exactly one pattern; shared black cells become white. Step 1 uses sparse patterns, step 2 adds overlap, and step 3 uses denser patterns. The incomplete row changes too.
Check answers after trying
1: D 2: A 3: C 4: B 5: E 6: F
Read each row left to right. Find how the first two patterns relate to the last, then check the other complete row. Keep positions black in exactly one pattern; shared black cells become white.
Why this answer
- 1. Keep positions black in exactly one pattern; shared black cells become white. → D Wrong cell (row, column) A: (2,3) ■ ≠ □ B: (1,2) ■ ≠ □ C: (1,1) ■ ≠ □ E: (2,1) □ ≠ ■ F: (1,2) ■ ≠ □
- 2. Keep positions black in exactly one pattern; shared black cells become white. → A Wrong cell (row, column) B: (1,3) □ ≠ ■ C: (1,2) □ ≠ ■ D: (2,1) ■ ≠ □ E: (1,3) □ ≠ ■ F: (1,1) □ ≠ ■
- 3. Keep positions black in exactly one pattern; shared black cells become white. → C Wrong cell (row, column) A: (1,1) ■ ≠ □ B: (2,1) ■ ≠ □ D: (2,3) □ ≠ ■ E: (2,1) ■ ≠ □ F: (2,2) □ ≠ ■
- 4. Keep positions black in exactly one pattern; shared black cells become white. → B Wrong cell (row, column) A: (2,2) ■ ≠ □ C: (1,1) □ ≠ ■ D: (2,3) ■ ≠ □ E: (1,1) □ ≠ ■ F: (3,3) ■ ≠ □
- 5. Keep positions black in exactly one pattern; shared black cells become white. → E Wrong cell (row, column) A: (3,1) ■ ≠ □ B: (1,1) □ ≠ ■ C: (3,2) ■ ≠ □ D: (1,2) ■ ≠ □ F: (1,1) □ ≠ ■
- 6. Keep positions black in exactly one pattern; shared black cells become white. → F Wrong cell (row, column) A: (2,2) ■ ≠ □ B: (3,1) ■ ≠ □ C: (2,3) ■ ≠ □ D: (1,1) ■ ≠ □ E: (2,1) □ ≠ ■
Tips for Parents
What is on the sheet Find the rule in the two complete rows. Choose A–F for ? and write one letter. Keep positions black in exactly one pattern; shared black cells become white. Step 1 uses sparse patterns, step 2 adds overlap, and step 3 uses denser patterns. The incomplete row changes too. Original practice activities, not a standardized test or IQ score. Steps describe the task, not an age or ability grade. Try one example Read each row left to right. Find how the first two patterns relate to the last, then check the other complete row. Keep positions black in exactly one pattern; shared black cells become white. 1. Keep positions black in exactly one pattern; shared black cells become white. → D. Read one problem and its conditions before starting. Work without a timer, and keep the key visible where the task requires it. Check a difficulty Keep positions black in exactly one pattern; shared black cells become white. Check every black cell. Use a rule that fits both complete rows, rather than choosing by resemblance. 1. Keep positions black in exactly one pattern; shared black cells become white. → D Wrong cell (row, column) A: (2,3) ■ ≠ □ B: (1,2) ■ ≠ □ C: (1,1) ■ ≠ □ E: (2,1) □ ≠ ■ F: (1,2) ■ ≠ □ If an answer differs, return to the first step that differs and explain the choice. Change the answer after checking rather than guessing a new rule. Choose the next step Keep positions black in exactly one pattern; shared black cells become white. Step 1 uses sparse patterns, step 2 adds overlap, and step 3 uses denser patterns. The incomplete row changes too. Try the next step when the current method feels manageable. You may repeat a problem, use a paper marker, or stop and return later.
What This Worksheet Builds
Read each row left to right. Find how the first two patterns relate to the last, then check the other complete row. Keep positions black in exactly one pattern; shared black cells become white. Keep positions black in exactly one pattern; shared black cells become white. Check every black cell. Use a rule that fits both complete rows, rather than choosing by resemblance.
Next Step
Keep positions black in exactly one pattern; shared black cells become white. Step 1 uses sparse patterns, step 2 adds overlap, and step 3 uses denser patterns. The incomplete row changes too. Try the next step when the current method feels manageable. You may repeat a problem, use a paper marker, or stop and return later.