Javier's 4th-grade class is excited to work on their science experiment. He separates the class into small groups, and the students need to figure out the order in which to add the chemicals to produce a reaction. What could Javier do to help his students learn?
Group of answer choices:

Tell them how to do it.
Point out important parts of the experiment and encourage students to review what works and what doesn't work.
Point out what they are doing wrong.
Praise the students when they figure it out by telling them that they are smart.