Grade 3 built human skeletons out of straws, pasta, paper and play dough. In the STEAM club, pupils from Grades 3 to 5 sent balloon rockets along a string and saw Newton's third law at work. Both stories come from our Elementary School and were first told to families in the In The Loop bulletin for 5 to 9 October 2026, and the balloon rocket is easy to try at home.
Grade 3 builds a skeleton
In Science, Grade 3 made skeleton models from straws, pasta, paper and play dough. The children placed each part with care: the skull, the spine, the rib cage, the hip bones, the arm bones and the leg bones.
To put a bone in the right place on the paper, you need to know where it sits in your own body, so building the models helped the class learn where the main bones belong and how they work together to hold us up.
Balloon rockets and Newton's third law
On Thursday 1 October, the STEAM club for Grades 3 to 5 built simple rocket models and tested ways to improve them. STEAM stands for science, technology, engineering, arts and mathematics.
Each rocket was a balloon taped to a straw, and the straw ran along a string pulled tight across the grass. Let the balloon go and the air rushes out of the back. The balloon shoots forwards.
A real rocket works on the same principle: it pushes gas out in one direction and moves in the opposite direction, which is what Newton's third law describes when it says that for every action there is an equal and opposite reaction.
The group also made balloons on sticks, just for fun.
Try it at home
You need a balloon, a drinking straw, a long piece of string and some sticky tape.
- Thread the string through the straw.
- Tie the string tight between two fixed points, for example two chair backs.
- Blow up the balloon and hold the neck closed.
- Tape the balloon to the straw.
- Let go.
The club went on to test ways of making their rockets better. At home, change one thing at a time, such as how much air goes into the balloon, and watch what happens.
Science in our Elementary School
Grades 1 to 5 learn at Dembego 12 in Ursynów, next to the Kabaty Forest, in the same building as our Kindergarten for children aged 4.5 to 6, and the building is open from 07:45 to 17:00, with after-school care for families who need it.
Lessons end at 15:10. After-school clubs run every day once lessons finish, and the STEAM club for Grades 3 to 5 meets on Thursdays; the clubs timetable shows the others. Across the school there are seven students to every teacher.
How to apply is set out on our admissions page.
