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Connect the dots with four straight lines in this critical thinking puzzle.

Critical Thinking Exercise worksheet with nine orange dots arranged in a 3x3 grid, instructions to connect all dots with four straight lines without lifting the pencil, and a logo for 15Worksheets.com.

Critical Thinking Exercise worksheet with nine orange dots arranged in a 3x3 grid, instructions to connect all dots with four straight lines without lifting the pencil, and a logo for 15Worksheets.com.

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Show Answer Key & Explanations Step-by-step solution for: Critical Thinking Worksheets - 15 Worksheets Library
To solve this puzzle, you need to think "outside the box." The trick is that your lines must go past the outer dots to connect them all with only four straight lines.

Here is the step-by-step solution:

1. Start at the top-left dot. Draw a diagonal line down through the middle-center dot and the bottom-right dot. Keep going past the bottom-right dot.
2. Turn up and draw a vertical line straight up through the right-middle dot and the top-right dot. Keep going past the top-right dot.
3. Turn left and draw a horizontal line across through the top-middle dot and the top-left dot. Keep going past the top-left dot.
4. Turn down-diagonal and draw a line through the middle-left dot and the bottom-middle dot to finish at the bottom-left dot.

Final Answer:
1. Start at top-left, draw diagonal down-right through center to bottom-right (extend out).
2. Draw vertical line up through right column (extend out above top-right).
3. Draw horizontal line left through top row (extend out left of top-left).
4. Draw diagonal line down-right through middle-left and bottom-middle to end at bottom-left.
Parent Tip: Review the logic above to help your child master the concept of 4th grade critical thinking worksheet.
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