Create with your child an amazing alarm box or a whole treasure chest for the boys. When you open such a box, the head of the clip will touch the paper clip. The electric current will close and the bell will ring. Instead of a bell, you can place a pleasant melody or song; girls will like this box more.
It is necessary
- - shoe box
- - thin cardboard
- - PVA glue
- - scotch tape
- - small plate
- - ball pen
- - two brass paper clips
- - steel paper clip
- - scissors
- - the wire
- - battery for 4.5 V
- - electric bell
Instructions
Step 1
Draw two circles on the cardboard on the plate. Their width should be the same as the width of the box. Cut out circles, fold in half and cut. You will need three semicircles.
Step 2
Cut the corners of one of the long sides of the shoe box lid. These will be the hinges on which the lid is folded back. Poke a hole in one corner of the lid with a ballpoint pen. Insert a paper clip into it. The clamp should be near the fold of the "hinges".
Step 3
Bend the flaps 1 cm wide on the straight edges of the semicircles. Glue them onto the top of the cover. When the glue is dry, reinforce the gluing with tape.
Step 4
Cut out a piece of cardboard to overlap with the semicircles. Roll and unfold the cardboard so that it bends easily. Tape it to both outer semicircles.
Step 5
Glue the back flap of the lid to the main box so that the lid opens and closes. Once the glue is dry, apply tape along the seam.
Step 6
Cut a small window in the humped cardboard lid to reveal the first clip. Just behind this clip, poke a hole in the loop and insert the second clip into it.
Step 7
Slide a paperclip over the second clip so that the first clip touches the clip when you open the cover. In the found position, secure the paper clip with tape.
Step 8
Attach the wires to the legs of the clamps inside the box. Secure them with tape. Wrap the end of one of the wires around the battery pole.
Step 9
Attach the bell and connect one of its leads to the second wire. Connect the free bell lead to the other pole of the battery. The bell should ring loudly.
