Present (whole class) on a TV or computer, and as you move between slides, the images will appear when you click on them. Get the students to identify the homophone, and then write how they think each pair are spelt. Don’t reveal the words until they have finished. Click on the words to reveal the correct spelling, to show the students. You can turn it into a competition where the winner spells the most pairs correctly, or students work in pairs to call out the answers. The pairs that work out the homophones the fastest, win!