Learn on PengiVocabulary from Classical Roots (Book 5)Chapter 3: Lesson 9-11

Lesson 10: Measuring in Math and Science

In this Grade 3 vocabulary lesson from Vocabulary from Classical Roots Book 5, students explore the Latin roots metr/meter (measurement) and therm (heat) to understand words like diameter, perimeter, geometry, thermometer, and thermostat. Exercises guide students through synonyms, context clues, and vocabulary extension activities that connect these terms to real-world math and science concepts. The lesson builds word analysis skills by showing how shared roots link related words across subjects.

Section 1

Words from the Root 'metr/meter': Measurement

Let's measure up! All these words are built on the Greek root 'metr' or 'meter,' which means 'measurement.' From shapes to music, they help us understand size and rhythm.

Key Words

diameter (n.)geometry (n.)metronome (n.)
perimeter (n.)symmetrical (adj.)

📝Example Usage:

  • In our math class, the first task was to calculate the diameter of a perfect circle drawn on the board.
  • To build a fence around the garden, we first had to measure its perimeter.

Section 2

Words from the Root 'therm': Heat

Things are heating up with this group! Each of these words comes from the Greek root 'therm,' which relates to heat and temperature.

Key Words

thermal (adj.)thermometer (n.)thermostat (n.)

📝Example Usage:

  • When the house felt cold, my mom showed me how to adjust the thermostat to a warmer temperature.
  • Before going skiing, we all wore thermal clothing to stay warm on the snowy mountain.

Book overview

Jump across lessons in the current chapter without opening the full course modal.

Continue this chapter

Chapter 3: Lesson 9-11

  1. Lesson 1

    Lesson 9: Creating Order

  2. Lesson 2Current

    Lesson 10: Measuring in Math and Science

  3. Lesson 3

    Lesson 11: Pulling Together

Lesson overview

Expand to review the lesson summary and core properties.

Expand

Section 1

Words from the Root 'metr/meter': Measurement

Let's measure up! All these words are built on the Greek root 'metr' or 'meter,' which means 'measurement.' From shapes to music, they help us understand size and rhythm.

Key Words

diameter (n.)geometry (n.)metronome (n.)
perimeter (n.)symmetrical (adj.)

📝Example Usage:

  • In our math class, the first task was to calculate the diameter of a perfect circle drawn on the board.
  • To build a fence around the garden, we first had to measure its perimeter.

Section 2

Words from the Root 'therm': Heat

Things are heating up with this group! Each of these words comes from the Greek root 'therm,' which relates to heat and temperature.

Key Words

thermal (adj.)thermometer (n.)thermostat (n.)

📝Example Usage:

  • When the house felt cold, my mom showed me how to adjust the thermostat to a warmer temperature.
  • Before going skiing, we all wore thermal clothing to stay warm on the snowy mountain.

Book overview

Jump across lessons in the current chapter without opening the full course modal.

Continue this chapter

Chapter 3: Lesson 9-11

  1. Lesson 1

    Lesson 9: Creating Order

  2. Lesson 2Current

    Lesson 10: Measuring in Math and Science

  3. Lesson 3

    Lesson 11: Pulling Together