Patterns & Algebra Assessment

Stanford PreK Math - Observing Mathematical Thinking

Diane: AB Pattern

AB Repeat

Child: Diane

Diane watches a yellow-purple-yellow-purple pattern, then recreates and extends it independently.

Diane: Explain & Extend

Pattern Logic

Child: Diane

When asked how she knew what to do, Diane explains "yellow-purple" and uses the repeating unit to justify the next cube.

Meredith: Explain Pattern

Explanation

Child: Meredith

Meredith identifies the AB pattern because "it has the same thing" repeating: yellow-blue-yellow-blue.

Sonia: Unit of Repeat

Unit Identification

Child: Sonia

Sonia breaks a character pattern into three repeating units and identifies the first character in each group as the anchor.

Brian: Growing Pattern

Growing Pattern

Child: Brian

Brian builds the 4th tower in a growing sequence, explaining it grows by 2 and alternates colors.

Ben: Missing Term

Missing Term

Child: Ben

Ben correctly identifies a missing frog card from a pattern by understanding the underlying repetition structure.

Meredith: Equivalent (Colors)

Equivalence

Child: Meredith

She translates an AAB pattern into a different color scheme, checking back and forth to ensure structure matches.

Ben: Equivalent (Cards)

Equivalence

Child: Ben

Ben successfully replicates an AB card pattern using a completely different set of cards.