Stanford PreK Math - Observing Mathematical Thinking
Child: Diane
Diane watches a yellow-purple-yellow-purple pattern, then recreates and extends it independently.
Child: Diane
When asked how she knew what to do, Diane explains "yellow-purple" and uses the repeating unit to justify the next cube.
Child: Meredith
Meredith identifies the AB pattern because "it has the same thing" repeating: yellow-blue-yellow-blue.
Child: Sonia
Sonia breaks a character pattern into three repeating units and identifies the first character in each group as the anchor.
Child: Brian
Brian builds the 4th tower in a growing sequence, explaining it grows by 2 and alternates colors.
Child: Ben
Ben correctly identifies a missing frog card from a pattern by understanding the underlying repetition structure.
Child: Meredith
She translates an AAB pattern into a different color scheme, checking back and forth to ensure structure matches.
Child: Ben
Ben successfully replicates an AB card pattern using a completely different set of cards.