Watch a parent chain take shape
Watch it
Watch one fact arrive at a time
This is an original 14-second silent animation, not a recorded lecture. Labels and answers appear in English and Hindi. Use the complete written explanation below in your selected language. Use the player’s pause/replay controls. The complete written explanation below teaches the same content, so watching is optional. First watch once; then replay and pause before the final highlighted path. Predict the answer before continuing.
Pause after A → B appears. Who is the parent? Pause after B → C appears. Start at C and predict A’s relation before the reverse path lights up.
Watch → draw → explain
Close or pause the clip. Rebuild the map on paper from its stated facts. Say one sentence explaining the highlighted path. If you cannot explain it yet, use the text version rather than replaying passively.
Start with the words, not a shortcut
A parent is a mother or father; a child is their son or daughter. “A is B’s mother” tells us that A is female and A is B’s parent. It does not tell us B’s gender. Letters are only name tags.
We draw parent → child. You may travel against an arrow when solving, but do not reverse the fact it records. “What is A to C?” means: stand at C and name A’s relationship to C.
Mother’s mother = maternal grandmother; father’s mother = paternal grandmother. In Hindi these are नानी and दादी. The first parent reached from the child decides the branch.
In this course, use only explicit links. A marriage link does not automatically make someone a parent. Siblings need not share both parents unless the question says so. These careful conventions prevent hidden assumptions; if a real test explicitly states a different convention, follow that stated convention.
A is B’s mother. Which arrow records a parent-to-child link?
Show answer
Correct answer: A
A is the parent and B is the child. The arrow is a drawing convention, not the direction in which the sentence is read.
Option A: Correct: A is the parent, so the parent-to-child arrow starts at A.
Option B: This reverses the given fact. B → A would record B as the parent of A.
Option C: The clue states motherhood, not marriage. Do not add a spouse link.
Option D: The word mother explicitly identifies A as a parent.
Hint: Who is the parent?
A is B’s mother. B is C’s father. What is A to C?
Show answer
Correct answer: B
Start from C: father B, then B’s mother A. A is C’s father’s mother.
Option A: This skips B. A is B’s mother, not a stated mother of C.
Option B: Correct: from C, father B → B’s mother A gives paternal grandmother.
Option C: This would require the middle person to be C’s mother. B is explicitly C’s father.
Option D: The two parent links put A two generations above C, not in C’s sibling generation.
Hint: Follow C → B → A, against the parent arrows.
In A (mother) → B (father) → C, which fact remains unknown?
Show answer
Correct answer: C
Mother fixes A’s gender; father fixes B’s. Being someone’s child does not tell us whether C is a son or daughter.
Option A: This is known: mother explicitly identifies A as female.
Option B: This is known: father explicitly identifies B as male.
Option C: Correct. C is a child, but no clue says son or daughter.
Option D: This is known: C’s father B has mother A.
Hint: Whose gender does “father” describe?
Prefer a still image?
Now take the separate practice
Open this lesson’s Practice test: five new checks, about eight minutes, with explanations after answering. This is a low-stakes learning check, not an official SSC paper. Try without the notes, then return to the exact step that caused an error. The optional time estimate is not an exam speed target.
Comparison note: these prototype modules use parallel versions of the same skills. Repeated exposure can improve your score, so this is a format comparison, not a controlled experiment proving which method is best.
Design inspiration: explorable explanations such as Nicky Case’s Crowds. This lesson uses original guided animation, not that project’s code, assets or a manipulable simulation.
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