快 快 kuài Strokes7 Radical 忄 — heart Made of 忄 heart 夬 decisive, certain How it's builtIdeograph — the meaning is built from its parts Play the animation
点 点 diǎn Strokes9 Radical 灬 — fire Made of 占 to divine 灬 fire How it's builtPhono-semantic — one part hints at the meaning, another at the sound Play the animation
儿 儿 ér Strokes2 Radical 儿 — son, child How it's builtPictograph — a drawing of the thing Play the animation More about the character 儿