2. The 5E lesson (BSCS)
Needs Whole class, then small groups · Grades K to 8 · One lesson to a week · Materials to explore
BSCS built it in the mid-1980s from the Karplus and Thier learning cycle (BSCS, 2006), in five steps. Engage brings out what students already think, explore has them working with the materials while you coach, and in explain students go first before you give the scientific explanation, briefly; elaborate applies it to a new situation, and evaluate assesses each student’s understanding. The lesson puts the content to work, and you lead the thinking throughout. As usually run, though, nothing is at stake, and each group shares one sheet in the explore, so you can’t tell which student observed what.
The fix
- Make the engage a decision the class owes someone.
- In the explore, give each student a job card and one observation to record under their name.
- Make the evaluate that decision, argued with the observations.



