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2nd grade math · Unit 5: Equal parts and time

Halves, fourths, and eighths

What this lesson shows

A round pizza cut into 2, 4, then 8 equal slices: halves, fourths, eighths. More equal parts makes each part smaller. Eight slices of different sizes are not eighths.

The worked example

The lesson works this one step by step: pizza (question 1). Then your kid tries one like it on paper.

The steps

  1. 2 equal parts: halves
  2. 4 equal parts: fourths
  3. 8 equal parts: eighths
  4. More parts, smaller parts
  5. Not the same size: not eighths

Helping at home

Fold a paper circle in half, then in half again, then once more, and count 8 equal parts: eighths. Name each part: one half, one fourth, one eighth. Ask which part is bigger, and whether 8 parts of different sizes are eighths.

If your kid gets stuck

Are the parts the same size?

Watch it with Lux

With Lux, this lesson is a narrated video and a printed page your kid works on. Then Lux helps with the same math on their own worksheet, one question at a time.

See how Lux works

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