These past few weeks my host teacher taught the unit about “ Matter and change”. The big ideas of these unit are :
- How is matter characterized?
- How the law of conservation of energy applies to changes of matter?
- How do different properties provide evidence of the identity of materials?
The learning goals for this unit are aligned with Alaska Standards:
B1:The student demonstrates an understanding of the structure and properties of matter by
 SB1.1 predicting the properties of an element (i.e.,reactivity, metal, non-metal) using the periodic table and verifying the predictions through experimentation.
Students need to have a basic understanding of the evidence and the reason behind how we know matter is made of discrete particles. Teachers should explain to students how we know atoms exist.