science

Instructions: Each row makes one card. Cut along the double lines and fold along the single lines. Then glue or tape the sides together.

The gas we breathe in	oxygen
the apparatus worked on the principal of reflection	periscope
the apparatus worked on the principal of reflection	periscope

the apparatus worked on the principal of reflection	periscope
The gas we breathe in	oxygen
the apparatus worked on the principal of reflection	periscope
The gas we breathe in	oxygen

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