Physics Classroom
Color Filters
Filters provide amusing changes to images in applications other than just Instagram! High school pupils apply their knowledge of colored filters to three different interactive sets of puzzles. They identify light colors that pass through...
Cornell University
Forensic Science: Case of the Missing Diamond Maker
Someone stole a diamond-making machine. Who done it? Scholars use forensic science at six different stations to determine the culprit. They analyze fingerprints, use their senses, and complete chemistry experiments to determine the...
Safe Drinking Water Foundation
To Filter or Not to Filter
Drinking clean water can be taken for granted. Explore the process and high cost of filtering water with a water pollution and filtration activity. Young scientist build a filtration system to filter polluted water, examine the economics...
Earth Day Network
Filtering Water
See the water filtration system up close with a fun science experiment. Young scientists work for several class periods to design a water filter using household objects, and then decide which filter material would be most effective in...
SRI International
Fine Filters
Need to know where your class' knowledge stands? Use these pre- and post-tests to determine your learners' knowledge about nano membranes and nano filters in relation to the filtering of water, specifically contaminated water.
NASA
Cleaning Water
From their sweat to the water vapor in their breath, astronauts recycle every possible drop of water while in space. After watching a short video describing the different ways materials are recycled and reused in space shuttles, young...
Teach Engineering
Water Remediation Lab
Water filtration — that's pure genius! Groups test the ability of a water filter to purify water by running chlorine contaminated water through a filter and measuring the chlorine concentrations as they filter the water. They then graph...
Curated OER
Soil is a Filter
Students examine how to take the impurities out of eater. In this exploratory activity students complete an experiment on how to filter drinking water.
Institute of Electrical and Electronics Engineers
Filtration Investigation
Scholars build a simple filtration system to remove impurities from muddy water and rate the filtered water to a grade of clarity scale. The focus is on teamwork and problem solving. This instructional activity would be effective in your...
Curated OER
Filter It!
Elementary schoolers who are learning about filtration and mixtures could use this instructional activity to gain practice in filtering techniques. In it, they are asked how to manipulate a container in a way that would lead to properly...
Marine Institute
Water Pollution
Sixth graders investigate the various types of pollutants found in water and ways to help prevent water pollution. Through a hands-on experiment, young scholars create samples of polluted water by mixing water with vegetable oil, dirt,...
Curated OER
Passive Filter Circuits
In this circuits worksheet, students answer 44 questions about audio tone control circuits, twin-tee filter circuits, and other types of passive filter circuits, their impedance and their design.
Curated OER
Forest as a Filter
Students experiment using soil and water. In this forest as a filter lesson, students identify the role of forest cover, vegetation, and foliage impacts erosion and evaporation. Students conduct a simple experiment, form a hypothesis,...
Curated OER
Active Filters
For this electrical worksheet, 1st graders design and build a circuit model to grasp the understanding of filters in circuits pertaining to impedance and cut-off frequency. They answer a series of 31 open-ended questions that include...
US Environmental Protection Agency
Role of Plants in Water Filtration
Investigate the amazing ability of plants to filter contaminants from water with this series of in-class demonstrations. After placing six small, potted plants in plastic cups, different solutions and mixtures are poured into them that...
May Media Group
Treatment Plants
Young scientists explore nature's water treatment plants in this simple science demonstration. By placing a stalk of celery in a cup of water mixed with food coloring, children are able to observe how plants absorb nutrients and...
PHET
Color Vision
Humans can only see visible light, but some insects can see ultraviolet light. Through a simulation, pupils explore how we see colors using one bulb. It moves on to demonstrate how we see colors by mixing three different bulbs (red,...
Curated OER
Kidney Filtering
Learners investigate how kidneys function. They discuss how a dialysis machine works, and conduct an experiment in which they filter different substances through a plastic window screen, various sizes of hardware cloth, and poultry...
Curated OER
Filtering Water
Students investigate the need for filtered water. In this filtered water lesson, students explore the health hazards posed from consuming unfiltered water. Students construct a water filtration device.
Curated OER
Filter Feeding in Reef Sponges
Students investigate the role of sponges in our oceans. In this biology lesson, students create a diagram visualizing how sponges bring food into their bodies through a filtering process. Students discuss the connections between...
Curated OER
Filter-Feeding in Reef Sponges
Students make observations and describe the filter-feeding in sponges as it relates to the ecological role of sponges on coral reefs. In this filter-feeding in reef sponges lesson, students are introduced to the feeding methods of...
Curated OER
Filtering Water to Prevent Pollution
Students explore techniques used to filter water and different pollutants. In this prevention of water pollution lesson plan, students define water pollution and list ways water is polluted. They explore water purification and complete a...
Curated OER
Cleaning Water: How Filters Work
Students construct their own water filter to obtain clean water. In this filtration instructional activity, students produce tainted water in order to properly filter it with filtration devices made in class.
NASA
The Atmospheric Filter
What is the difference between a comet and a meteoroid? An educational lesson includes five demonstrations of how the atmosphere can inhibit our ability to measure many things in the galaxy.