“I just wanted to take a second to say thank you for everything this year! Math isn't always the easiest subject, but you made it feel way more understandable, and even fun sometimes (which is impressive). The way you explained things really helped, and I appreciate how patient you were with all our questions, even the ones that probably seemed super obvious.
I feel like I actually learned a lot, and its thanks to how much effort you put into making sure we got it. You never made me feel like I was bad at math, even when I was struggling, and that really meant a lot.
Hope you have an amazing summer, you deserve a break after teaching us all year! Thanks again for everything!”