Assemble physical structures according to visual models using interlocking blocks, tessellations, and puzzles.

Use tally marks and structured checklists to record and summarize scientific observations.

Compare sets of specimens using one-to-one matching and numerical counting to test equivalence.

Investigate mass and volumetric capacity of physical materials using balance scales and containers.

Analyze natural sets by composing, decomposing, and calculating one more and one less up to 10.

Demonstrate that total quantity is conserved regardless of spatial rearrangement or disposition.

Count specimens accurately up to 10 using one-to-one correspondence and determine cardinality.

Recite the oral number sequence up to 30 and quantify larger scientific collections.