First of all, you cannot make your lessons fun unless you 1. know your children and 2. are interested yourself. So, first get to know your students. Ask them what they like? What are their interests? What do they do in their spare time? You can use this information to make up activities, pick reading passages and even write math word problems. Getting to know your students also shows that you care and are interested. Chances are, if you show you are interested in their learning, they will be too. Once you do these two things, lessons will seem to go more smoothly, you can connect better and learning can really take off. You just have to take that extra step!