Finishing a lesson isn't the same as knowing it.
Manara keeps track of what you can do on your own and what you can do with help. Your level only goes up when you show it without hints.
Works with whatever you're studying.
Wave speed, frequency and wavelength
A sound wave travels through air at 340 m/s with a frequency of 170 Hz. What is its wavelength?
- Answered 57,800 m. Multiplied instead of divided.
- Hint shown: rearrange v = fλ to get λ on its own.
- Answered 2 m. Correct.
Your level
Developing
You got there with help, and that counts. Solve a fresh question without hints to reach Proficient.
How Manara decides what you know
- 1
Paste
Drop in your notes, a textbook page or an article. Manara picks out the key ideas.
- 2
First check
Answer a few questions with no hints, so Manara sees where you start.
- 3
Learn your way
Lessons set in worlds you like. Ask for a hint when you're stuck. Every hint is noted.
- 4
Prove it
Solve a new question on your own. That's what moves your level up.
Five levels, each one earned
Each idea in your course gets its own level. A solid bar means you showed it on your own. A striped bar means you got there with help, and Manara will check again with a new question.
Before you answer anything, an idea is not assessed. That's different from being at the bottom.
Emerging
You recognise parts of the idea but still need a lot of help.
Developing
You solve straightforward problems with some guidance.
Proficient
You apply it on your own to problems like ones you've seen.
Advanced
You handle unfamiliar or multi-step problems.
Transfer
You explain it, connect it to other ideas, and use it anywhere.
You can always see why
Every level change comes with the answers behind it. No mystery scores, no levels that go up because you clicked through a lesson.
Moved up to Proficient. You solved 2 new wavelength problems without hints on 18 and 20 October.
- Tuning fork wavelengthOn your own
- Sound in air, 170 HzOn your own
- Bat echo frequencyWith a hint
Lessons set in worlds you like
Tell Manara what you enjoy: anime, cartoons, a sport, a game. Explanations and examples are written in that world. The questions, and how your level is judged, stay exactly the same.
- Cricket
The crowd's roar from the far stand reaches the pitch a moment after the bat cracks. Sound in air covers about 340 metres each second, so a 170 m boundary hears it in half a second.
- Space
On the space station two astronauts float a metre apart, helmets off inside the cabin. They can talk because the cabin is full of air. Outside, with nothing to carry the vibration, they couldn't.