Each of the 4 Next Generation Science Standards (NGSS) for Grade 2- “Structure and Properties of Matter” are addressed in this packet:
2-PS1-1: Plan and conduct an investigation to describe and classify different kinds of materials by their observable properties.
2-PS1-2: Analyze data obtained from testing different materials to determine which materials have the properties that are best suited for an intended purpose.
2-PS1-3: Make observations to construct an evidence-based account of how an object made of a small set of pieces can be disassembled and made into a new object.
2-PS1-4: Construct an argument with evidence that some changes caused by heating or cooling can be reversed and some cannot.
Make learning about matter fun! I introduce my class to the topic by projecting 3 slides onto my classroom whiteboard - slides discuss matter and mass,definition of solids, liquids, and gases. The next 4 slides are photographs where students have to identify solids, liquids, gases. Follow up with 2 student worksheets on solids, liquids, gases (definitions and draw an example of each).
Activities 1 and 2 address the first standard – Plan and conduct an investigation to describe and classify different kinds of materials by their observable properties.
Activity 1: you will need water, ice, baking soda, vinegar, balloons. Have students examine the properties of matter, let them see what happens when baking soda is added to vinegar! Student worksheet provided.
Activity 2: -24 picture cards showing 8 solids, 8 liquids, 8 gases and work mats labeled “solids”, “liquids”, “gases” are provided. Have your kids work in groups to sort different types of matter. Student worksheet provided.
Activities 3 and 4 address the 2nd standard: Analyze data obtained from testing different materials to determine which materials have the properties that are best suited for an intended purpose. Materials:baking soda, cornstarch, flour, sugar, dry beans, index cards, straws, scrap paper, cardstock, tape, rulers. Challenge your students to build a house that will protect the 3 Little Pigs from the Big, Bad Wolf! Students must test different materials that will act as "mortar" then they will use a small amount of that mortar as the foundation of a house built with tape, straws, and paper. Photos of my 2nd graders' designs included as well as directions and 2 student worksheets ("Which Mortar Works Best?" and "House Measurements"). Three Little Pigs and Big, Bad Wolf character cones included so students can put them in the house. My kids love making these houses, I know yours will too!!
Activity 5 addresses the 3rd standard: Make observations to construct an evidence-based account of how an object made of a small set of pieces can be disassembled and made into a new object. Everything we see is made of matter and matter can be broken down into smaller parts (atoms). To illustrate this at the elementary level, the NGSS recommend using Legos, building blocks – build a structure, disassemble it, then build another structure using the same parts. In case you don’t have blocks or Legos, I’ve included some rectangles you can print out – have your students use their imagination! What can they create using just small rectangular pieces of paper? Then have them disassemble and create something new! Middle school connection :all matter can be broken down into atoms and everything we see is made of the 100 or so atoms on the periodic table. Atoms can be rearranged to form new molecules.
Activity 6 addresses the 4th standard: Construct an argument with evidence that some changes caused by heating or cooling can be reversed and some cannot. Show students the 7 slides depicting matter in various states due to temperature differences. For every slide ask the following questions:
1. What state is the original object in - solid, liquid, gas?
2. How did it change state - through heating or cooling?
3. What is the new state of matter – solid, liquid, gas?
3. Is the change reversible?
Student worksheet provided.
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