The pictures and practices of self-made first prize teaching AIDS in primary schools are as follows:

1. Prepare two pieces of cardboard and pattern paper.

2. Print some pattern paper first.

3. Draw the same figure on the cardboard.

4. Empty the cardboard on it.

5. Stick two pieces of cardboard together with hot melt adhesive.

6. Stick the pattern paper on the cut cardboard.

7. Finally, stick the bottle cap on the pattern block.

8. The pattern teaching aid is completed.

The above are the pictures and practices of self-made first prize teaching AIDS in primary schools.