1.8.A

Math1st Grade

The Standard

collect, sort, and organize data in up to three categories using models/representations such as tally marks or T-charts

Texas Essential Knowledge and Skills for Mathematics

Teacher's field guide

What This Standard Means

What Students Need to Do

Students gather objects or answers and place them into as many as three clear groups. They show the groups with labeled drawings, tally marks, or a simple chart.

What Mastery Looks Like

Students place every item or response into one clearly labeled group. Their tally marks match the items, and they can explain how they organized the data.

Common Misconceptions

Students may count an item twice or leave one out. They may use overlapping groups, reverse tally marks and totals, or make groups without clear labels.

How to Assess It

Give each student nine picture cards showing cats, dogs, and fish. Ask them to sort the cards and record each group with labeled tally marks.

Lesson moves

Ways to Teach It

  1. Give pairs a bag of colored buttons to sort into three paper circles, then record each group with tally marks.

  2. Ask, “How could we group our favorite recess activities?” Have students name three clear categories and explain where each response belongs.

  3. Students roll a number cube 12 times, sort results as 1 to 2, 3 to 4, or 5 to 6, and tally each roll.

  4. Survey ten classmates about traveling by bus, car, or walking, then organize the responses in a labeled tally table.

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