Because they came up frequently in various social studies classes I co-taught in New York City, I wrote these two context clues worksheets on the noun heretic and the adjective heretical. I was going to comment that I probably should have written another one on the noun heresy, but a glance in the folder that holds all these documents reveals I already did.
If you find typos in these documents, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.