DIY﹕Moon phase(月相) viewer

Tools and materials

(1)

(2)

(3)

(4)

(5)

(6)

【明報專訊】Tools and materials

- small torch

- cardboard

- toilet paper roll

- split pin

- scissors

- marker

(1)Cut out three circles from the cardboard. Each disc should be the same size as the base of the toilet paper roll.

(2)Make a hole in the centre of disc 1. The hole should fit the small torch. Adhere the cardboard and the torch to one side of the toilet paper roll.

(3)Divide disc 2 into 8 section. Draw on the edge of each section a moon phase and cut out the bright parts of the moons. Make sure the moons are the same size.

(4)Divide disc 3 into 8 sections and cut away one. Make a small hole in the centre of the dics 2 and 3 and connect them with the split pin.

(5)Adhere the combined disc 2 and 3 at the other end of the roll. Disc 2 should be placed inside.

(6)Turn on the torch and enjoy the view against a dark surface by rotating disc 3.

■Glossary

disc (n) 圓盤形

[Smarties' Power English 第200期]

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