A note for the parent
What your child had to do in this Circles problem
This was not a watch-and-copy exercise. The student had to make 4 small mathematical decisions and correct any wrong turns before moving forward.
The skill being built
Reasoning, not answer recognition
Use equal tangents and congruent triangles to show OA and OB bisect the co-interior angles, so the two half-angles in △AOB add to 90°.
The mistake we watch for
A wrong answer is useful evidence
Guessing 60° from a symmetric-looking figure instead of using the bisected co-interior angles.
What happens when a step goes wrong?
The choice is crossed out
The app does not pretend the mistake did not happen.
The reason is explained
The child sees the exact misconception behind that choice.
The child tries again
The app guides, but the student still makes the next decision.
If this teaching style helps
Let your child keep learning this way
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