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43 resources with the concept hardness

Lesson Planet

Water, Water Everywhere Different

For Students 9th - 12th
Water is not all created equal! Prove it to your class by having them complete a science laboratory to analyze the properties of different samples of water. Learners use equipment to measure qualities such as conductivity, hardness, and pH.
Lesson Planet

Investigating and Modeling Hardness

For Students 6th - 8th Standards
Model hardness testing with a self-designed hardness test. Young scholars rate the hardness of different types of aspirin using the Vicker's Hardness scale. They then relate hardness to the solubility of each aspirin tablet.
3:54
Lesson Planet

Making Hard Water Soft

For Students 9th - 12th
We need softened water to easily clean our homes, our clothes, and our bodies ... but how do you soften hard water? Part six of a 7-video series exploring the world's water resources and issues shows the two most common methods of...
5:25
Lesson Planet

Uses of Limestone - Cement, Mortar, and Concrete

For Students 9th - 12th
This rock is on a roll! Introduce young geologists and environmentalists to the many uses of limestone using the fifth installment in a series of seven. Illustrate the components and properties of cement, mortar, and concrete, all while...
1 In 1 Collection 3:37
Lesson Planet

The Science of Lunch

For Students 3rd - 8th Standards
Extend your class's observation skills with a video about additional properties of matter. The video covers the ways an item can be altered, including its hardness, malleability, conductivity, and magnetism as information you can use to...
Lesson Planet

Rocks & Minerals

For Teachers 4th - 7th Standards
Take young geologists on an exploration of the rock cycle with this six-lesson earth science unit on rocks and minerals. Through a series of discussions, demonstrations, and hands-on investigations your class will learn about the...
Lesson Planet

Rocks and Minerals in Our Lives

For Teachers K - 6th Standards
Young geologists discover the important role that rocks and minerals play in our everyday lives through this series of hands-on activities. Starting off with a lesson that defines the difference between plants, animals, and minerals,...
Lesson Planet

Rock On! Featuring the Igneous, Sedimentary and Metamorphic Trio!

For Teachers 1st - 3rd Standards
Get your classroom rocking with this four-lesson earth science unit. Through a series of shared reading activities and hands-on investigations, young geologists learn about the three types of rocks and the unique properties of each.
Lesson Planet

What Are Minerals?

For Teachers 4th - 7th Standards
Take young geologists on a trip through the rock cycle with this series of four earth science presentations. Beginning with an exploration of minerals and the different properties they exhibit, this resource goes on to explore...
Lesson Planet

Crushing Test

For Teachers 3rd - 8th
Solidify understanding of the properties of crystals by crushing them to compare hardness. After some class discussion, a procedure is planned, and then small groups go about making observations as they crush five different crystal...
Lesson Planet

Water Quality Indicators

For Teachers 9th - Higher Ed
When environmental studies classes are preparing to sample water for quality, they need to know what factors to test. This collection of slides explains different water quality indicators and why each is important. Viewers will be able...
Lesson Planet

Nano Interactions

For Teachers 6th - 9th Standards
Tiny particles can provide big learning opportunities! Middle school scientists explore the world of nanoparticles through reading, discussion, and experiment. Collaborative groups first apply nanotechnology to determine water hardness....
4:21
Lesson Planet

Hard and Soft Water

For Students 9th - 12th
What does it mean to have hard or soft water? Learners discover the chemistry behind water hardness in the fifth video of a seven-part series describing our water resources. Using simple animations and balanced chemical equations, young...
Lesson Planet

How hard is it?

For Students 2nd - 4th
Inquiry is probably one of the most fun ways kids learn. They will test the hardness of 10 different minerals in order to classify them. They rate each of the minerals from most to least hard. Note: Having real minerals for this...
Lesson Planet

Rocks and Minerals

For Teachers 4th - 7th Standards
Take young geologists on an exploration of the collection of rocks and minerals that we call Earth with an upper-elementary science lesson. Through a series of class discussion and hands-on investigations, students learn about the three...
Lesson Planet

Rocks and Minerals: Finding Clues Like a Scientist

For Teachers 4th - 8th
The background information and activity sheet for this lesson are impressive in appearance. The intent is to guide junior geologists though an examination of mineral properties and identification. The problem with the lesson is that it...
11:24
Lesson Planet

Reaching Breaking Point: Materials, Stresses, and Toughness: Crash Course Engineering #18

For Students 9th - 12th Standards
Don't let materials science break you. An informative video explains the mechanical properties of materials. It uses a stress-strain diagram to discuss elasticity, hardness, toughness, creep strength, and fatigue strength. It also...
Lesson Planet

Sounds Good to Me

For Teachers 6th - 8th
Students determine density and hardness of wood samples based on several investigations. In this physical science and music lesson, students visit four centers and perform tests on wood samples to determine densities and hardnesses. They...
Lesson Planet

Understanding pH, Alkalinity, and Hardness

For Teachers 9th - 12th
High schoolers comprehend the interactions of pH, alkalinity, hardness, and carbon dioxide in aquaculture water. They read the SRAC fact sheet number 464 "Interactions of pH, Carbon Dioxide, Alkalintiy and Hardness in Fish Ponds." ...
Lesson Planet

Mineral Madness

For Teachers 6th - 8th Standards
Science does not need to be as hard as a rock. Pupils test 10 different minerals to determine their properties. The learners observe luster, streak, hardness, and fluorescence for each specimen. Afterwards, they compare and contrast the...
Lesson Planet

Time and Rate

For Students 7th - 12th
In this rate graphing worksheet, students graph four examples of rate vs. time. Then students complete 20 short answer questions.
Lesson Planet

Minerals: Earth's Jewels

For Students 9th - 12th
In this minerals worksheet, students will review 5 vocabulary words associated with minerals including rock, gem, ore, and crystal. Then students will complete a crossword puzzle with 7 terms relating to the different tests that can be...
Lesson Planet

Mineral Identification: Mineral Scratch Test

For Students 9th - 12th
How can mineralogists tell a diamond in the rough from a chunk of table salt? Science scholars find out through an interactive that demonstrates the characteristics of minerals used for identification purposes. Topics include hardness,...
Lesson Planet

Testing the Waters

For Teachers 9th - 12th
Should you trust the water you drink every day? The hands-on activity has scholars test water from different sources for contaminants. Pupils perform chemical testing and make conclusions about pH, hardness, iron, chlorine, lead, and...