Lesson Plan Subject: Science Topic: Properties of matter Date: June 14. 2013 Time allotment: 90 mins Prescribed Learning Outcome(s)—taken directly from the IRP(s) It is expected that students will be able to: Grade 2 -­‐ use their senses to interpret observations -­‐identify the properties of solids, liquids, and gases -­‐ investigate changes to the properties of matter when it is heated or cooled -­‐ investigate the interactions of liquids and solids Grade 3 -­‐ measure objects and events -­‐ describe shapes that are part of natural and human-­‐built structures (e.g., domes, arches, pyramids) -­‐compare the effects of different materials, shapes, and forces on the strength and stability of different structures -­‐ conduct investigations into ways to improve the strength and stability of structures Learning Objective: Students will be able to: • Use simple household items such as vegetable oil, food coloring, Alka-­‐Seltzer and a bottle to create chemical reactions •identify the properties of solids, liquids and gases •describe the interactions of liquids and solids Materials: -­‐ Water -­‐10 clear plastic bottles -­‐Vegetable oil -­‐Food coloring -­‐Alka-­‐Seltzer tablets Lesson Structure: Anticipatory -­‐focus and engage students Hook -­‐establish purpose/ relevance -­‐link to real life of students Time: 10 minutes Instruction -­‐model/demonstrate -­‐provide examples -­‐inquire/ question -­‐everyone is accountable and active Time: 10 mins Guided Practice -­‐initiate practice activities which are under direct supervision -­‐continue to check for understanding -­‐monitor all students progress Time: 20 mins Independent Practice -­‐complete tasks -­‐application of skills and concepts -­‐monitor, give feedback, encourage, support Time: 40 mins -­‐ask questions about the lesson to check understanding -­‐next class, we will… -­‐assess student learning Time: 10 mins Closing ▪Pose the questions: -­‐ Who can give me examples of solids, liquids and gases? Provide a brief description to each one -­‐Blow up a balloon and then release it; explain how gases tend to move from high pressure to low pressure -­‐Pose questions:”Does oil and water mix?”, then show them the demonstration -­‐Discuss why oil and water do not mix(density difference) -­‐”Who has seen a lava lamp before?” -­‐Show kids pictures of java lamps on the iPad. -­‐ Today we will be making our own lava lamps! -­‐“What do you think may happen if I put an Alka-­‐Seltzer tablet into the water?” ▪ Ask students to make predictions based on the question “What would happen to the water if I add an Alka-­‐Seltzer tablet and food coloring?” -­‐Write down their predictions on the flip chart paper and kids can vote on them -­‐Show them the procedures of making a lava lamp step by step ▪ Students return to their tables and work in pairs to make their lava lamps ▪ Have students do a gallery walk around the classroom and appreciate the beautiful lava lamps they have made -­‐Refer back to their predictions and explain what happened inside the bottle Adaptations and/ or Modifications Possible Extensions: ▪ When finished all the tasks, we can take the experiment a step further by tightly screwing on a bottle cap and tipping the bottle back and forth, what happens then and why this happens? Assessment /Evaluation: Student Achievement The student was able to… -­‐Use simple household items such as vegetable oil, food coloring, Alka-­‐Seltzer and a bottle to create chemical reactions •identify the properties of solids, liquids and gases •describe the interactions of liquids and solids Instructions: 1. Pour water into the plastic bottle until it is around one quarter full (you might want to use a funnel when filling the bottle so you don't spill anything). 2. Pour in vegetable oil until the bottle is nearly full. 3. Wait until the oil and water have separated. 4. Add around a dozen drops of food coloring to the bottle (choose any color you like). 5. Watch as the food coloring falls through the oil and mixes with the water. 6. Cut an Alka-­‐Seltzer tablet into smaller pieces (around 5 or 6) and drop one of them into the bottle, things should start getting a little crazy, just like a real lava lamp! 7. When the bubbling stops, add another piece of Alka-­‐Seltzer and enjoy the show! What's happening? Oil and water don't mix very well. The oil and water added to the bottle are separate from each other, with oil on top because it has a lower density than water. The food coloring falls through the oil and mixes with the water at the bottom. The piece of Alka-­‐Seltzer tablet dropped in afterward releases small bubbles of carbon dioxide gas that rise to the top and take some of the colored water along for the ride. The gas escapes when it reaches the top and the colored water falls back down. The reason Alka-­‐Seltzer fizzes in such a way is because it contains citric acid and baking soda (sodium bicarbonate), the two react with water to form sodium citrate and carbon dioxide gas (those are the bubbles that carry the colored water to the top of the bottle). References: Youtube. http://www.youtube.com/watch?v=WayviQkusxI (a Youtube video showing the process of making a easy lava lamp)