The phrase "activity types" refers to different categories or classifications of activities that can be done. It helps to describe the nature or purpose of an activity. Full definition
Moving to the numbers helps beginning math learners develop concepts of one - to - one correspondence and basic counting literacy using a variety of activity types. (nationalmathfoundation.org)
If you prefer, you can also find all president activities by activity type by clicking on a link in this paragraph. (apples4theteacher.com)
And of course, these different research teams testing different learner groups could consistently find that different activity types result in different retention levels, which almost always round into neat multiples of 10? (elearningindustry.com)