Rockets & Space Flight Basics (how rockets work, safe model rocketry)

Copy this, open Claude, paste it, and Claude will walk you through the lesson step by step.

For a grown-up: Claude is for adults (18+). Copy this, paste it into Claude, and use the answer to explain the lesson to your child.

I'm learning "Rockets & Space Flight Basics (how rockets work, safe model rocketry)" on The Future Market. Lesson 1: "What is a rocket? Push back to go forward".

What the lesson teaches:
- Newton's third law: whenever one object pushes on another, the second object pushes back with an equal force in the opposite direction. A rocket engine pushes hot gas out the back; the gas pushes the rocket forward. This push is called thrust.
- NASA explains a jet or rocket engine the same way: hot exhaust flows out the back and produces a force in the opposite direction.
- Newton's first law (inertia): an object stays still, or keeps moving in a straight line at the same speed, unless an unbalanced force acts on it. A rocket on the pad stays put until thrust is bigger than its weight.
- Newton's second law: the bigger the force on an object, and the smaller its mass, the faster it speeds up (force = mass x acceleration). A light rocket with a strong motor speeds up quickly.
- A rocket does not need air to push against. It pushes on its own exhaust, which is why rockets work in space.
- History: American scientist Robert Goddard launched the first liquid-fuelled rocket in 1926 in Auburn, Massachusetts.

The exercise I'm working on:
Build a balloon rocket with an adult: thread a string through a drinking straw, tie the string tight between two chairs, tape a blown-up balloon (opening pinched shut) under the straw, then let go. Try it three times with the balloon blown up small, medium and big. Write down which went farthest and why you think so.

I'm stuck. Please:
1. Explain the main idea in plain, simple words with one everyday example.
2. Walk me through the exercise one small step at a time. Ask me what I've done so far before giving the next step.
3. Don't just give me the final answer. Help me do it myself, and check my work when I share it.

I'm a parent helping my child (about 8 years old) with a lesson called "What is a rocket? Push back to go forward" from the course "Rockets & Space Flight Basics (how rockets work, safe model rocketry)".

Here's what the lesson says:
Blow up a balloon and let it go. The air rushes out the back, and the balloon zooms the other way. A rocket works the same way: it throws stuff out the bottom very fast, and that pushes the rocket up.

The activity:
Build a balloon rocket with an adult: thread a string through a drinking straw, tie the string tight between two chairs, tape a blown-up balloon (opening pinched shut) under the straw, then let go. Try it three times with the balloon blown up small, medium and big. Write down which went farthest and why you think so.

Please explain this so an 8-year-old understands: short sentences, a fun everyday example, and no hard words.
Then give me 3 simple questions I can ask my child to check they understood, and a way to do the activity together, one tiny step at a time.