Here is a great post from Alice Keeler talking about DOK (Depth of Knowledge) levels and evaluating activities before giving them to learners: is the activity/worksheet worth the students’ time? Does it make learning sticky? Can a robot grade it?
She lists several principles for activities, worksheets or apps: context not clipart, using real data, encouraging critical thinking, communicating ideas clearly – and opportunities for the good old redo and spiralling.
Just like Bloom’s taxonomy, DOK seems to be a useful tool to balance levels of challenge and achieve better learning. Now, what level was your last lesson at?