Curated OER
Human Tools: From Stone to Iron
In this tools worksheet, students read about the tools used during the Stone Age and how the process of smelting lead to a great change in tool making. Then students complete 3 short answer questions.
National Institute of Open Schooling
Occurrence and Extraction of Metals
Steel is a man-made alloy or a mixture of metals. Lesson 18 in this series of 36 focuses on metals and their extraction from Earth. Individuals read about, discuss, and answer questions after learning how people find most metals, the...
Curated OER
Chemistry of Iron and Charcoal Manufacturing in PA
Students examine the historical purpose of the forests in Pennsylvania and investigate how the iron manufacturing process works. In this chemistry lesson students write the chemical formula for making charcoal.
Curated OER
Harmful Effects of Acid Rain
Seventh graders are able to demonstrate the harmful effects of an acidic solution. They become aware of the harmful effects of acid rain. Students make predictions before they began the experiment. If vingegar contains acid, then how...
Curated OER
Environment" The Mining Cycle
Students explore the world of mining and explain its importance in daily life. After describing how companies search for mineral deposits, they examine the environmental consequences of mining as well as the positive aspects. The...
Curated OER
Harmful Effects of Acid Rain
Students participate in an experiment to become aware of the harmful effects of an acidic solution -- acid rain.
Curated OER
Acid Rain: The Disappearing Statue
Second graders examine the effects of acid rain on statues and buildings. They participate in an experiment in which they use different chemicals on building materials. They observe and record their observations.
Curated OER
Acid Rain: An Air Pollutant
Fifth graders participate in an experiment in which they examine the effects of acid rain on buildings. They discover how huge a problem acid rain is not only to structures but to the environment. They gather pictures of acid rain to...