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1st grade · Math · Unit 11 of 14

One Half

Share fairly and find one half!

What your child practices

One half means 1 of 2 equal parts. Children share items fairly between two people and see that two halves make a whole.

Arizona Academic Standards learning standard: 1.G.A.3 · partitioning circles and rectangles into equal shares and naming halves

How we explain it

Children can open this short lesson before they practice.

  1. Half means two equal parts.
  2. Both parts must be the same size.
  3. Half of a number is shared by 2 fairly.

Example: What is half of 8? Share 8 between 2. Each gets 4. Answer: 4

One Half in Arizona

In the Arizona Academic Standards, this is unit 11 of 14 in 1st grade Math, after Count It Up and before Hour & Half Hour.

Gradelings describes a child's practice on this unit as Beginning, Approaching, Meeting or Exceeding (Four practice steps). That reflects practice, not a report-card mark: the teacher decides the mark.

Source: Arizona Department of Education

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    Is this a fair way to cut a pizza in half?

    🍕
    • One big part and one tiny part
    • Three parts
    • Two equal parts

  2. Question 2

    What is half of 4?

    • 4
    • 6
    • 2

  3. Question 3

    18 ⚽ are shared fairly by 2 friends. How many each?

    • 12
    • 9
    • 7

  4. Question 4

    A ribbon is cut into 2 pieces. When are they halves?

    🎀
    • when both pieces are the same length
    • when there are 3 pieces
    • when one piece is longer

  5. Question 5

    13 cookies are shared by 2 friends. How many are left over?

    • 1
    • 0
    • 2

  6. Question 6

    18 🐥 are shared fairly by 2 friends. How many each?

    • 9
    • 8
    • 3

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