Add within 100 using concrete models, number lines, place-value strategies, and expanded column methods, composing a ten when needed.

Master addition and subtraction facts within 10 and develop flexible mental strategies within 20.

Learners will read and locate dates on calendars, sequence days, months, and seasons, and compare event durations in standard units of time.

Sort and classify objects and information into up to three categories using lists, tally marks, and T-charts.