Science · Grades 3
Hot-Air Balloon Ballast Hover
Balance the up and down forces on a hot-air balloon to make it hover, rise, or sink, and explain why it starts or stops moving.
Start Hot-Air Balloon Ballast HoverWhat children practice
- Balanced Forces Tug Arena: Predict how balanced and unbalanced pulls change whether an object starts, stops, or keeps still.
How to use this activity
Invite your child to try the challenge independently first. Encourage them to explain their thinking, use the immediate feedback, and try again when an answer does not work. Short, repeated practice helps build confidence.
Related Science activities
Science · 4
Animal Senses Signal Lab
Model how animals receive, process, and respond to information.
Activity detailsScience · 3
Ant Colony Food Haul
Explain how working in a group helps ants gather food that is too big for one and defend their nest.
Activity detailsScience · 4
Appliance Energy Detective
Detect the forms of energy that electrical appliances give off.
Activity details