the goal:Inference: Cells use food or sugar to produce energy. Note the mitochondria in differe.....

the goal:Explanation of how we can infer a chemical change has occurred.Materials and tools:Ammonia.....

the goal:Determine the value of atmospheric pressure using a mercury barometer.Materials and tools:t.....

the goal:Identifying the components of the digestive system.Materials and tools:A model of the diges.....