Materials:
- 1 empty bottle
- 5 straws
- 2 wooden sticks
- 2 light plastic wheels
- 4 balls or bottle caps
- 1 balloon
- Some hot glue
- Some tape
- Some cardboard
Procedure:
Step 1: Cut cardboard into 2 of 10cm x 17 cm, 2 of 13cm x 17 cm, and 1 of 10cm x 13cm with the blade.
Step 2: Cut another 10 x 13cm cardboard and cut a rectangular hole with the dimensions of 2cm x 3cm at the center of the cardboard with knives.
Step 3: Grab a hot glue gun and set it up correctly for use.
Step 4: Glue the 5 pieces of cardboard together with hot glue. Hold the cardboard so that the glue could dry and stabilize.
Step 5: Grab 2 long straws and hot glue them on the bottom of the car so that they are parallel to each other and are 8 cm away.
Step 6: Grab 2 sticks and sharpen them so that they can support the wheels.
Step 7: Put 1 stick inside the straw on the back of the car, then put the wheels on the stick. Repeat this for the front side of the car.
Step 8: Cut a 2 of 1cm x 9cm cardboard and label them A, 2 of 2cm x 9cm cardboard and label them B, 2 of 1cm x 4cm cardboard and label them C, and 2 of 2cm x 3cm cardboard and label them D.
Step 9: Glue the A cardboards onto the last 10x13cm cardboard so that it is 1cm away from the center hole as for on the diagram.
Step 10: Glue the C cardboards onto the last 10x13cm cardboard so that it forms a 4cm x 9cm rectangle at the center of the board.
Step 11: Put the D cardboards inside the rectangle.
Step 12: Glue the B cardboards onto the A cardboards so that it seals the D cardboards and turns them into sliding doors.
Step 13: Glue 3 straws together and cut them to different lengths.
Step 14: Stick the straws inside the balloon and seal it with hot glue so that it does not let air through.
Step 15: Put the balloon and straw bundle inside the door.
Step 16: The car is built, clean up.