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Seed Size

Source Institutions

    Lawrence Hall of Science

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Seed Size

In this activity, learners collect, arrange, and draw various seeds from smallest to biggest. They also estimate how many of the smallest would fit into the biggest. In addition, learners predict how many seeds they would find inside an apple or lemon, and cut open these fruits to check their prediction against the real seed count. The Did You Know section describes the biggest and smallest seeds on Earth.

Quick Guide

Preparation Time:
45 to 60 minutes

Learning Time:
30 to 45 minutes

Estimated Materials Cost:
$1 - $5 per student

Age Range:
Ages 6 - 11

Resource Type:


Materials List (per student)

  • Paper
  • pencil
  • apple and/or lemon
  • fruit knife
  • A collection of available seeds, such as
  • Pumpkin seed
  • Avocado seed
  • Lemon seed
  • Watermelon seed
  • Coconut
  • Sunflower seed
  • Walnut
  • Pea
  • Sesame seed


  • Life Sciences
    • Diversity of Life
      • Plants
  • Mathematics
    • Measurement
      • Units of Measurement
      • Size and Scale


To use this activity, learners need to:

  • see
  • touch

Learning styles supported:

  • Involves hands-on or lab activities


This resource is part of:

Access Rights:

  • Free access



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