Elementary Chemistry – Cohesion

This set of lessons is just the resource you need when you want your students to work as teams of scientists as they learn about a physical property of liquids.

Why buy this unit?

   ♥ A lesson overview video gets you started with a preview of the activities, materials, and resources. It's like I'm sitting next to you explaining your options;

   ♥ Seven activity videos can save set up and clean up time or be shown to a student absent from science class;

   ♥ A PowerPoint™ presentation contains a variety of images and can be used to spark a conversation before, during, or after the lessons. All the images are licensed under Creative Commons so you can use them in different contexts during your science class;

   ♥ A web site link provides more background information and additional suggestions for activities about the properties of liquids and evaporation;

   ♥ A student text with two different reading levels is included with color or blackline images, English text or Spanish text;

   ♥ The texts are recorded for students who benefit from hearing the information;

   ♥ A variety of assessments with suggested answers or a rubric gives you choices when assessing your students.

The activities use materials* that you can collect or you can buy a basic or deluxe materials kit from my store.

This lesson could be part of a unit for NGSS 2-PS1-1◊, and 5-PS1-3♦.

This unit is part of a series about chemistry including: particles, solids, liquids, this product, physical change, and chemical change.

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* Materials: containers of water, black pepper, flat toothpicks, an eyedropper, dish soap, pennies, plastic cups, and string.


◊ 2-PS1-1. Plan and conduct an investigation to describe and classify different kinds of materials by their observable
properties.

♦ 5-PS1-3. Make observations and measurements to identify materials based on their properties.