Wow, we have made a periscope!
Making a Leaning Tower requires concentration!
This lens camera is beautiful!
Let us try to untie ourselves!
We can study resonance using just a pipe, thread and two weights!
Do you know, I can make music using a pipe?
We are busy making a perpetual calendar!
Look at our lovely double swing!
Our teacher is showing us a rainbow!
See our pinhole camera, it works!
I have inverted the glass, but the card does not fall!
We fooled Ma'am with the Magic 9 puzzle!
Look at our climbing monkeys!
Did you know, a Zoetrope was used to see movies?
Wish we could sit on such a double swing!