Pre-K Introductory Letter Early Learning Unit 1, Week 1 Early Learning Unit 1, Week 2 Early Learning Unit 1, Week 3 Early Learning Unit 1, Week 4 Early Learning Unit 1, Week 5 Early Learning Unit 1, Week 6 Early Learning Unit 2, Week 7 Early Learning Unit 2, Week 8 Early Learning Unit 2, Week 9 Early Learning Unit 2, Week 10 Early Learning Unit 2, Week 11 Early Learning Unit 2, Week 12 Early Learning Unit 3, Week 13 Early Learning Unit 3, Week 14 Early Learning Unit 3, Week 15 Early Learning Unit 3, Week 16 Early Learning Unit 3, Week 17 Early Learning Unit 3, Week 18 Early Learning Unit 4, Week 19 Early Learning Unit 4, Week 20