Lesson 3

Water, Water Everywhere: Designing Water Filters

Exploring Filter Materials / Grades 1–6 / North Chelmsford, MA

The EIE Curriculum

EiE - Water, Water Everywhere: Designing Water Filters, L3

Students test a variety of filter materials to see how well they remove particles and color from contaminated water.

Reflection Questions

What evidence do you see that Kathryn and Meghan spent time preparing materials before teaching this lesson?

  • Kathryn and Meghan prepared sample materials bags for each group of students, which contained screen, coffer filters, sand, and gravel. (3:12)
  • They prepared several bottles of contaminated water for students to test: tea water, soil water, and cornstarch water. (8:15)
  • For testing, teachers cut the tops off of 2-liter soda bottles and taped them to chairs (9:20), labeled and marked several different cups for pouring and collecting (9:48), and measured out samples of sand and gravel for each group. (10:14)

How does Kathryn make sure that all students are familiar with each of the materials they will have available to them design their water filters?

Kathryn passes out small samples of each material for students to touch, identifies each item with proper vocabulary, and reviews each of their properties.

  • Student groups are given small samples of the materials and encouraged to explore their properties. (3:30)
  • After students have handled the materials, Kathryn goes over each item and introduces the various words they could use to describe it. (3:50)
  • Students describe the properties of the various materials, and Meghan records their ideas on chart paper. (4:39)