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Y1 Y2 Y3 Y4 Y5 KG G1 G2 G3 G4 G5 G6 G7 G8 G9 G10 G11 G12
Category Science Math English Social Studies
Subject Grade 7 Science - Physics
Topic Light travels in straight lines if the medium does not change
 
Light travels in straight lines if the medium does not change
Light travels in straight lines if the medium it travels through does not change.
 
 
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