My 3 almost 4yo is currenting learning letter sounds. The hard C sound as in Cat sounds similar to the K sound in Kitten. On the Khan app, the tracing C activity has a photo of kittens though I can see that it's intended to be Cats for C. Since Cat and Kitten sound similar this is confusing. Today I asked my child for a word that started with the C sound and she said Kitten. When I corrected her, she brought up Khan Academy and that specific activity as proof that C is for Kitten. I'm proud of her for using evidence to support her argument but I think it would be best to switch the photo to an adult Cat.