Advanced Science Primary 3 Diversity

Luke wants to test the strength of different types of strings. He should _________ to make it a fair test.

A use strings of different lengths
B use strings of different thicknesses
C add weights of different sizes
D use the same type of weights
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Worked Solution

Step 1: In a fair test, only one variable (string material) should change. Step 2: Everything else (length, thickness, weight type) must be constant. Step 3: Using the same type of weights ensures accuracy.

Correct answer: use the same type of weights

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