Grade 2: Irreversible and Reversible Changes (2-PS1-4)


  • Grade: 2
  • Content Area: Physical Science: Matter
  • NGSS Standard: 2-PS1-4


This unit focuses on irreversible and reversible changes while using heat and cooling. The teacher does a lot of the demonstrations since a hot plate and griddle will be used but the children do all the thinking and ask most of the questions. They melt crayons, make eggs, pancakes, and oobleck.