This is a good one or two class project. Since my classes are only 30 min. I usually have the students draw their Jar, then use a wet finger on tempera cakes to make bugs. One finger can be used for butterflies or two fingers if each finger becomes a wing. Also we use our pinkies to make caterpillars. The next week we add the details, eyes antennae, grass. I like that this can be used when you have just finished a long project and want a one/two day project.