Students study the characteristics that are used to compare and classify animals. They observe and compare the characteristics of sow bugs and pill bugs, and help design experiments to learn which type of environment (dark or light; wet or dry) the bugs prefer.

Student Resources

• 3.1 Vocabulary
• 3.2 Comparing Pill Bugs and Sow Bugs
• 3.3 Wet or Dry?
• 3.4 Light or Dark?
• 3.5 Section 3 Assessment

Learn by Reading

For additional content-area reading, check out the Houghton Mifflin Science eBook: Grade K, Unit A, page 8.