Present with Lumen5

Lumen5 is a nice way to do presentations in a photo story style.

PHET for science and math

Whit PHET you can demonstrate math and science problems. Might be helpful, Not that cool loking but works.

British councils learn English pages

From learnenglish.britishcouncil.org/en you can find good stuff for kids m, teenagers and grown ups

Adjustable english exercises

How much and how long ? Choose and do exercises in cambridgeenglish.org

Easy english

Esolcourses have exercises for beginners

Printable English exercises

mes-english.com has vast variety of printable exercises in various topics. Good for beginners

English exercises

englisch-hilfen contains many exercises for english