Driving Question:  How can you use a no bake recipe to prove that the weight of matter stays the same, even when matter goes through a change or changes form?

Standards:  5-PS1-2. Measure and graph quantities to provide evidence that regardless of the type of change that occurs when heating, cooling, or mixing substances, the total weight of matter is conserved.

First: Conservation of Matter lab by Acorn in Teachers Pay Teachers

Students will learn about measuring and graphing data in this lab.  They will also see how simply adding salt and water to create a new substance (chemical change) does not affect the weight of matter.  

Second: With this background knowledge and new experience (day 1 lab), students begin thinking about what recipe they can make to prove that the weight of matter will stay the same when they combine the ingredients and cause a change (heating, cooling, or mixing substances in the recipe).  They'll need to figure out what materials they'll need (ingredients, kitchen utensils, etc.).  They begin writing their recipe neatly on a recipe card.

Third: Another work day.  Students should be sure their recipe card is well written and easy to follow.  Others should be able to follow the recipe and make the exact same product.  They need to think about how they will display their recipe card, food/drink product, and their data graphs.  They can work on their display.

Fourth:  Students will bring in all their materials.  They'll measure and graph the quantities of their raw ingredients.  Then they'll make their recipe, following it step-by-step.  They will then measure their product to find its total weight.  They will put together their product, data graphs, and recipe card to display for parents and administration.  They should be able to describe what they did and what they learned about matter.  It may be helpful for them to write down a statement explaining what their product shows about matter.