NGSS 5-PS1-1 States of Matter NGSS Aligned Lesson – Modeling Matter Made of Particles Too Small to be seen is a 5E phenomena based lesson plan. The lesson starts with a PowerPoint and short video to engage your students. Their involvement deepens with three explore activities, two of which are hands on lab exercises. Also included is a detailed explanation PowerPoint with linked video on the states of matter. Three elaboration activities and an evaluation activity complete the lesson. Thi