St John's School

Scarborough

Welcome to Year 3

Marshmallow Catapults

The Year 3 children followed a sequence of steps to make a catapult capable of firing a projectile (marshmallow) into the air. The aim was to get the marshmallow into the cup.
As a class we discussed the stored energy (potential energy) within the catapult. As the marshmallow soared into the air, the children discussed its kinetic energy (or, energy of motion).
We also looked at the properties of the materials used. The elastic bands were used to secure the pop sticks as they had elastic energy. The positioning of the pop sticks played an important role as it determined how much downward force could be applied to the pop stick.

Click the thumbnail to view a gallery of photos from our Year 3’s.

Marshmallow Catapults

Click the thumbnail to view the gallery.

The Year 3 children followed a sequence of steps to make a catapult capable of firing a projectile (marshmallow) into the air. The aim was to get the marshmallow into the cup.
As a class we discussed the stored energy (potential energy) within the catapult. As the marshmallow soared into the air, the children discussed its kinetic energy (or, energy of motion).
We also looked at the properties of the materials used. The elastic bands were used to secure the pop sticks as they had elastic energy. The positioning of the pop sticks played an important role as it determined how much downward force could be applied to the pop stick.