Great question, as being virtual adds a more difficulty than normal. The first suggestion I have is to create something highly engaging for students. Students should be excited to learn and will need extra motivation being virtual. You can also have students pick up, or if possible, have materials dropped off to them in advance. This can create excitement, while also preparing students will all the materials, they will need to be successful. In this packet of materials, include books that show the lifecycle of a butterfly, as well as pictures, coloring sheets, worksheets. This will prepare the students to learn with you while you have them on Zoom. During the zoom, read a book so students can see the screen. I really like the National Geographic book titled Caterpillar to Butterfly. Stop at each picture and ask students to use the picture to describe what is happening. After the story, students can draw a timeline of what happens. After the zoom, encourage students to tell their family about the lifecycle picking out the most important steps.