TalentJR apps
Every experiment in this course follows the same five steps. Ask a question (“Do seeds need water to sprout?”), make a hypothesis — a testable guess (“I think they do”), do the experiment, observe and record what happens, and draw a conclusion (“So seeds need water”). A fair test changes only one thing, keeps everything else the same and measures the result. Repeat it to check, report what you really saw, and follow the safety rules every time.
✓ You passed this lesson’s test.
Ask, guess, test, see, say — “scientists ask a question, make a hypothesis, test it fairly, observe and conclude”
Use it for: Every science project, science fair and lab report; Class 5–9 lessons on how scientists work.
Check: Changing water AND light together is not a fair test ✓
▶ Watch it animatedWork it out in your head or on paper, type the answer and press Check. Stuck? Press “Show me how”.
Right: 0 · Tried: 0
20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.
🏅 Sign in with Google to earn the 🔬 Hypothesis Hero badge when you pass — and a certificate when you finish all 10 lessons of Part 3 · Physics and STEM projects. You can still take the test without signing in.
Why does it work? When should you use it? Ask in English, मराठी or हिंदी.
Sign in with Google to ask Free — 20 questions a day.
Prefer a real teacher? TalentJR teachers take live online classes anywhere in India and visit homes in selected cities. Tell us what you need and our team will call you with timings and fees.