MathematicsGrades 1–4
Balance Scale
How many cubes are hiding in the box?
Put cubes in the mystery box and watch which way the balance tips. The equals sign says both sides match.
MAT.3.2.8
School Lab
Labs for grade 3
Labs mapped to the learning outcomes of the grade 3 curriculum. Each one opens in its grade 3 version; the outcome codes are on every card.
- 4 labs
- Grade 3 · Ages 8–9
- Turkish · English
- No scores
Hi, I'm Cool! Let's make a guess first, then try it.
Labs
Choose a lab
Every lab opens with one question: predict first, then experiment, then explain. Pick a grade and that grade's version opens.
4 labs · Grade 3All grades
MathematicsGrades 2–4
Fraction Workshop
If you cut it into more pieces, do the pieces get bigger?
Split same-size strips into equal parts and stack the pieces. Which is bigger: a third or an eighth?
MAT.3.1.9MAT.3.1.10MAT.3.1.11
MathematicsGrades 2–4
Gear Clock
What does the hour hand do when the minute hand goes all the way round?
Turn the minute hand and watch the gears behind the clear back. How far does the hour hand move?
MAT.3.1.12MAT.3.1.13MAT.3.1.14
MathematicsGrades 1–4
Solids Workshop
If you turn a square, is it still a square?
Turn and resize toy solids, count their faces or fold the net of a cube. What changes, and what stays the same?
MAT.3.3.1MAT.3.3.3
How it works
Every lab follows the same eight steps
The explorer cycle: children predict first, then try. The experiment only opens once a prediction is in, and a wrong guess is never punished, just explored.
- 1
Ready?
Children meet the pieces and make a first move.
- 2
What do I know?
They show what they think; nobody says right or wrong.
- 3
In everyday life
They link the idea to something from home or school.
- 4
Predict
They choose a prediction; only then does the experiment open.
- 5
Try and observe
They try it, look closely and replay it as often as they like.
- 6
Why?
They learn the name for what just happened.
- 7
Try something new
They test the idea in a new situation.
- 8
My explorer notebook
They look back at their prediction and collect a discovery card.
No scores
No timers, no rankings, no losing. If a prediction doesn't work out, Cool just asks: “Hmm, why do you think that happened?”
No data sent
No accounts, names or photos. Language and sound settings and progress stay on the device.
Off-screen too
Every lab comes with an activity for the teacher's desk, using things you already have in class.
For teachers
Get ready in five minutes
Every lab has a one-page printable teacher card: the lesson flow, a class prediction vote, discussion questions, misconceptions and an off-screen activity for the teacher's desk.
Teacher cards
Good to know
On the classroom board
Open the lab full screen. At the predict step, children show their choice with their fingers and the class watches the result together.
On a tablet or at home
Children can also explore on their own. The lab works in Turkish and English, and read-aloud uses the device's own voices.
Curriculum
Mapped to learning outcomes of Türkiye's national curriculum; not reviewed or approved by the Ministry of National Education (MEB) or its Board of Education (TTKB).
The labs don't ask for accounts, names or photos, and they send no data. Privacy: School Lab
School Lab is a personal project by Serdar Kul. The labs are free and ad-free.