Why can half a Moon be called a quarter? Try six short questions, explain your reasoning, then compare it with the notes. This is self-practice, not an exam or an automatic grade.
Download a working file to keep your notes and responses.
6 questions to try
Nothing left in this practice view.
You marked every current question Got it. Your notes and response history are still here.
Make a predictionNot tried
A friend says: “It is first quarter, so only a quarter of the Moon’s visible disk is bright.” What would you correct?
Choose another question
A sentence or two is enough. This tool does not grade your answer.
0 / 5,000 characters
Compare your thinking
One way to explain it
Read the supporting notes
Your responses (0)Removed questions
Bring it back. Make it yours.
Keep the learning, change the material.
The working file contains your notes, responses, self-ratings and earlier versions. Nothing is automatically saved. Your entries stay in this tab; this site does not receive them.
Continue where you left off
Open a working JSON file you downloaded here. Your response history and self-ratings come with it.
Revise this notebook
Import updated study material with the same notebook and question IDs. Changed questions need another try; earlier responses stay in history.
Learn something else
Ask your agent to turn your own notes into a notebook JSON. Download your current work before switching topics.
JSON files only, up to 8 MB. Up to 200 questions and 80 short notes. Study-material imports use notes and questions only; to retain a file’s existing responses, use Reopen working file.