Students begin their investigation of current electricity by exploring circuits. They discover that electricity can flow only through a closed circuit and build a simple circuit using wires, batteries, and bulbs. Students also observe that electrical energy can be converted into light and heat.

Student Resources

• 2.1 Vocabulary
• 2.2 Lighting a Bulb
• 2.3 Comparing Bulbs
• 2.4 Building a Circuit
• 2.5 Section 2 Assessment

Learn by Reading

For additional content-area reading, check out the Houghton Mifflin Science eBook: Grade 4, Unit F, page F56.