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...
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...
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...
Curated OER
Soil is a Filter
Students examine how to take the impurities out of eater. In this exploratory lesson students complete an experiment on how to filter drinking water.
Curated OER
Filter It!
Elementary schoolers who are learning about filtration and mixtures could use this worksheet to gain practice in filtering techniques. In it, they are asked how to manipulate a container in a way that would lead to properly filtering...
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...
Curated OER
Passive Filter Circuits
In this circuits activity, 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
Internet Filter Infiltration
Students explore the effects of Internet filters in schools. They work in small groups to survey different types of people in the school community about their views on school Internet filters and draft an Internet policy based on their...
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.
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. For 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...
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
Active Filters
In 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...
Curated OER
Plankton in the Air
Here is a lab activity adequate for use with any full lesson on environmental factors that shape animal adaptations or marine animal characteristics. Pupils will discuss the role plankton plays in the environment and filter-feeding...
Curated OER
Water Filtration
As an example of nature's water filtering system, young ecologists conduct an experiment in the lab. They construct a funnel out of a plastic bottle, fill it with specified layers of materials that simulate layers of soil, then run muddy...
Curated OER
Which Colored Filter Will Decode a Secret Message?
Students investigate how to create secrete messages through filters. They view pictures with red and green filters and discuss what they observe. They select the color filter that works best to read secret messages. They view pictures...
Curated OER
Coffee Filter Eggs
Students make coffee filter eggs. In this art activity, students cut coffee filters into egg shapes. Food coloring is added to water and students drop the colors onto the eggs using a eyedropper. Students allow the filters to dry and...
Curated OER
What Happened To The Chesapeake Bay Filtering System?
In this Chesapeake Bay worksheet, students read a dialogue between 2 people about what had happened to the Chesapeake Bay filtering system, and answer short answer questions about it. Students complete 4 questions.
Curated OER
Making a Water Filter
Fifth graders investigate the process of water treatment. They listen to the book, "The Magic School Bus Visits the Waterworks," design a plan for a water treatment system, construct a water filter using various materials, and test the...
Curated OER
Diversity: Using Light to Filter Prejudices
Students use physics to discuss diversity. In this social interaction lesson, students use their knowledge of colors and filters to relate it to stereotyping and prejudices.
Curated OER
Filter Fun Flower
Students create a flower out of a coffee filter and decorating gels. In this flower lesson plan, students display these flowers in their classroom windows.
Curated OER
What happens to water before we use it?
Students examine how water is treated prior to becoming available for human consumption. In this water treatment activity, students conduct an experiment in which they filter water. Students formulate a hypothesis, test, analyze data,...
Curated OER
Dirt: Making Dirty Water Clean!
Fourth graders study soil and water. In this water activity students work in groups and use a filter to clean water.
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