S+3.2.3+Lesson+2

= LESSON PLAN = created by: Eagle Valley Elementary and Foothills Elementary

Standard 3
Physical Science. Students will gain an understanding of Physical Science through the study of the forces of motion and the properties of materials.

Objective 2
Analyze objects and record their properties.

__Student learning objective__:
3. Predict, identify, and describe changes in matter when heated, cooled, or mixed with water.

=__Materials needed__:= Spoons Paper towels Half & half cream Sugar Vanilla Extract Coffee Cans Ice Salt Measuring cups Measuring spoons Quart sized Ziplock Bags Gallon sized Ziplock bags

=__Background:__=

Different objects (types of matter) can be mixed together. A mixture is two or more things put together – like salads, soups, cakes, etc. Some mixtures can be easily separated – like picking the tomatoes out of your salad. Some mixtures are hard to separate – like separating the chocolate from your chocolate milk. When a solid (like chocolate powder) completely mixes with a liquid (like milk), we say that the solid has completely dissolved into the liquid. Some objects can be mixed together to create something completely new. We can use a solid and a liquid to create a gas (like the air we breathe – CO2) or we can use different liquids to create a solid. If we change the temperature of some objects, we can create something completely new like ice cream. Heating an object can evaporate it (if it’s a liquid) or melt it (if it’s a solid). By cooling or taking heat away from a liquid, we can freeze it or turn the liquid into a solid, like ice cream!

• **//Make sure no one is allergic to the ingredients.//** • Each student (or group) will make their own bag of ice cream; therefore, ingredients need to be measured and prepared ahead of time. • Each student/group will receive: o ½ cup cream o 1 tbsp sugar o 1 tsp vanilla extract o 1 quart Ziploc bag o Gallon sized ziplock bag with 2 cups of ice o ¼ cup salt o 1 spoon
 * Prep:**

__Teacher (To) directions/actions/instructions__:
Can matter change from one state to another? What would happen if I put this water on the stove? What would happen to the water? What if I put it in the freezer? What state of matter would it be in? Can we change the state of matter by mixing them together? Let’s experiment and find out. • Solid • Liquid • Gas • Matter • Observation • Mixture Review the terms matter. Have students give examples of each type of matter using the terms solid, liquid, and gas. Explain that, in this lesson, we will take the different states of matter we learned about and combine them to make something new –ice cream!
 * Anticipatory Set (Engage):**
 * Vocabulary:**
 * Modeling:**

=__Teachers/Students (With) actions__:= Guided Practice: • Set out ingredients to make ice cream: cream, sugar, vanilla, ice and salt. • Have students describe each ingredient as a solid, liquid, or gas. • Mix ½ cup cream, 1 tbsp sugar and 1 tsp vanilla into a small Ziploc bag. • Squeeze out extra air and zip the bag closed. Set this bag aside. • Add ¼ cup salt to Gallon sized ziplock filled with ice. • Place quart sized bag inside the gallon sized bag and seal the bag tightly. • Shake the bag • Instruct students that they will be shaking the bag for about 10 minutes.

__Students (By) actions/activities students will do during lesson__:
Have pre-measured/mixed quart sized bags prepared. Also, Gallon sized bags with salt and ice. Place small bag inside the large bag and seal the bag tightly. • Shake the bag for 10 minutes. • Remove the small bag and observe whether the ice cream is a solid or a liquid. • Open the small bag and use the spoon to enjoy the ice cream!

__Assessment-these may be written, verbal, observations, etc__:
What state of matter is ice cream? (solid) What did we use to make it? (milk and vanilla – liquids and sugar and ice – a solid) What did we take away to change from liquid to solid? (took away heat with ice)
 * Check for understanding:** Can be given as an individual written record or as a whole class discussion and shared writing.