Knowing how your child learns is very important. There are Visual Learners, Auditory Learners and Kinesthetic Learners. A visual learner learns best by watching the board, or reading, auditory learners learn best by hearing something explained to them, and kinesthetic learners learn best via hands-on activities.
Making sure you know which kids learn best with which style can be crucial in them understanding the curriculum.
Having a hands-on (kinesthetic) learner read about doing a science experiment won’t be nearly effective as them doing the experiment themselves. So, it’s important that a teacher do all of the styles of teaching, giving all of their students a chance to learn how they will best absorb the content.
So, activity planning. Like I said above, the teacher should make sure their lessons contain an even mixture of styles, or if possible find activities that combine all three. A science experiment is a good example. Have a sheet detailing the steps of the experiment, have the teacher do a demonstration, and have the students do the experiment along with the teacher.