They are aimed at Junior and senior Priamry students but of course can be adapted to fufil any age or ability. They fit with the other science activities i have on here.
Cup of tea
My resources are free, but if you liked them or used them i am always happy to have a cup of tea with you!
Two lesson plans / worksheets but you will need a little prep as well. They encourage students to experiement and to predict outcomes, as well as being fun of course.