Learn on PengiVocabulary from Classical Roots (Book 5)Chapter 3: Lesson 7-9

Lesson 8: 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

WordDefinition
diameter(n.) a straight line that passes through the center of a circle
geometry(n.) the study of shapes, lines, and space
metronome(n.) a device that keeps a steady beat
perimeter(n.) the distance around the outside of a shape
symmetrical(adj.) having two matching sides; the same on both sides

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

WordDefinition
thermal(adj.) relating to heat
thermometer(n.) an instrument used to measure temperature
thermostat(n.) a device that controls temperature

Book overview

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

Continue this chapter

Chapter 3: Lesson 7-9

  1. Lesson 1

    Lesson 7: Creating Order

  2. Lesson 2Current

    Lesson 8: Measuring in Math and Science

  3. Lesson 3

    Lesson 9: 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

WordDefinition
diameter(n.) a straight line that passes through the center of a circle
geometry(n.) the study of shapes, lines, and space
metronome(n.) a device that keeps a steady beat
perimeter(n.) the distance around the outside of a shape
symmetrical(adj.) having two matching sides; the same on both sides

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

WordDefinition
thermal(adj.) relating to heat
thermometer(n.) an instrument used to measure temperature
thermostat(n.) a device that controls temperature

Book overview

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

Continue this chapter

Chapter 3: Lesson 7-9

  1. Lesson 1

    Lesson 7: Creating Order

  2. Lesson 2Current

    Lesson 8: Measuring in Math and Science

  3. Lesson 3

    Lesson 9: Pulling Together