|
Water, Water
Everywhere
|
| Subject
Area |
Environmental
Science |
| Age
or Grade |
7th Grade |
| Mass DOE Content Standard |
Give
examples of ways in which organisms
interact and have different functions within an ecosystem. Identify ways in which ecosystems have changed throughout geologic time in response to physical conditions, interactions among organisms, and the actions of humans. |
| Prerequisite
knowledge/skills |
Scientific
method, brainstorming, water systems in area |
| Description
of New Content |
Students
will learn about their local water shed and the importance of keeping
it clean. |
| Goals |
Students
will understand water consumption and affect it has on their local
environment. Students will build two water filters and use the scientific mthod to compare their effectivness. |
| Materials
Needed |
Computer
to show opening clips. For filter: Plastic cups, various types of fabric scraps, coffee filters, sand, gravel, and dirty water for filtering |
|
Procedure
|
Opener Students are asked how much water they think they use in a day. Then either as a class or in groups, stundet will list activities the do that require water. Using the water use worksheet2 students can calculate their water usage. Students can watch the Water Treatment plant2 clip to understand how water get to their house. Exploration Student will watch the Water Filter2 clip to understand how to design a basic water filter. Ask students is groups to design two water filters they can compare using the materials provided or brough from home. Students should ave a hypothesis as to which filer will work better and why before they receive building materials. Students will build their filters and add dirty water to each filter. Results will written in a lan report as below. |
| Evaluation |
Student will write a lab report on the filter project. Sections will include: The final lab report will include: Question: Will filter A or filter B work better? Hypothesis Procedure: Draw or describe the two types of filters and how they were used. Data Analysis: What did the water look like after filtering? Which filter worked better? Conclusion: Why did one filter work better? How does this relate to how we get clean water? |
| Extensions |
There
are many other activities on Teachers Domain invovling water cycle and
pollution. Student can research more on water treatment plant in their area and find out about the filters the plants use. |
| References | 1.
Holt
Science and Technology Short Courses: Environmental Science. Chapter 3: The Earth’s Ecosystem 2. Teachers Domain / PBS kids: Zoom! |