Students look at the findings of a Hopi Indian dig site in order to reconstruct the sequence of events that occurred in the past. They examine the stratigraphy while making multiple hypothesis about the artifacts and their locations at...

Eighth graders examine what materials cause water hardness and the relative measure of water hardness in a two part lab activity. In part one, 8th graders add an assigned soap test solution to eleven different test tube solutions in...

Pupils identify and interpret that leaves provide food for new trees and plants. Students cut out leaves and glue them on the appropriate number on included worksheet. Pupils collect different types of leaves and make leaf rubbings....

Students examine zip lock bags of clay, silt, and sand to determine its origin. They rotate through stations to compare different soils and perform oil separation and Tullgren funnel tests.

Students investigate the concept of exponential functions and how they increase in size over time. They simplify the functions in order to find the solutions that are possible and perform analysis of the curved line that is produced when...

In this land usage worksheet, students read about farmers in Bolivia are using a system called raised-bed agriculture to feed its people. Students complete 2 short answer questions based on what they read.

In this literacy worksheet, students look for the words that are related to the concept that is reviewed in the sheet. They also acquire new vocabulary.

In this literacy worksheet, students practice looking for the words that are related to the idea that is focused upon in the sheet. The skill of spelling is used and vocabulary increases.

In this chemicals worksheet, students fill in 61 blanks of statements comparing the chemicals used in farming and the chemicals found in medicines and food.

In this health worksheet on taking care of teeth, students read about the importance of good care, and about the different parts of a tooth using a labeled diagram.

Students investigate the use of landfills. In this landfill use and recycling lesson plan, students discuss what happens to trash and junk. They review the types of trash before categorizing a list of items they throw away each day. They...

Students learn about the biological carbon cycle. In this carbon cycle lesson plan, students access the web site and mouse over the diagrams to follow the carbon cycle. They read about what happens to humans and plants during this cycle.

Learners polish a Petoskey stone to show how to make an attractive rock display. In this polishing rocks lesson plan, students use sand paper and polishing materials to polish a rock and remove the rock dust. This is to display a nice...

In this recycling puzzle instructional activity, students use a set of 8 clues about recycling to complete a spiral puzzle. A reference web site is included for additional activities. 

In this recycling vocabulary learning exercise, students use a set of recycling definition clues to complete a crossword puzzle. A reference web site is given for additional activities.

Students investigate oil accumulation by creating a model in their classroom. In this petroleum geology instructional activity, students discuss where oil comes from and why it is vital to our society at this particular time. Students...

Students identify the different components that make up soil. In this earth science lesson plan, students create a pamphlet for next year's class. They analyze how erosion and weathering shape the Earth.

Students create a definition of eutrophication.  In this organic material lesson students work together to create a storyline.

Pupils identify the different sources of radiation around us. In this physics lesson, students calculate their estimated radiation exposure per year. They research a current issue about radiation.

Students investigate insects. In this insect analysis lesson, students catch insects using nets they make. They identify the insects they catch and create a chart to show the numbers and varieties. This lesson includes a vocabulary list...

Students discover how palaeontologists conduct a dig for fossils and how they interpret the age of the fossils. In small groups, they prepare a "dig site" consisting of bones, rocks and soil layered in a cardboard box. They switch boxes...

Watch beta decay occur for a collection of nuclei or for an individual nucleus.

Good site explaining exponential growth and decay, with questions for students to test themselves.

A detailed and comprehensive site explaining exponential decay. Includes formulas and many examples.