arch bridge

This Arch bridge is made of bricks, stone or metal. An arch bridge is famous because they have arches to hold them up.

bridges

solar oven

I made a solar oven with tin foil, black paper, news paper and a pizza box.

Maths

I am learning to solve additton problems by using doubles.
6+7=13
6+6+1=13

7+8=15
7+7+1=15

8+9=17
8+8=1=17

7+9=18
7+7+2=18

5+7=12
5+5=2=12

I solved these problems by using my doubles.