Finding factors is an integral skill on the road to fractions and algebra. Scholars write down a factor list for nine numbers up to 30. Next, they examine provided lists and circle the numbers that are factors of eight more numbers, also not exceeding 30. Finally, there is a brief introduction to prime numbers after which scholars record all those under 30 without factors other than one and themselves. Two examples help guide learners, but consider doing one of these from each section together.