Unit 1

  1. U1-1 Invention (VocD)
  2. U1-2 Invention (SplB)
  3. U1-3 Invention (Uns)

Unit 2

  1. U2-1 Thank you (VocD)
  2. U2-2 Thank you (SplB)
  3. U2-3 Thank you (Uns)
  4. U2-4 Mars Farm (VocD)
  5. U2-5 Mars Farm (SplB)
  6. U2-6 Mars Farm (Uns)
  7. U2-R Review [1-2] (VocD)

Unit 3

  1. U3-1 Polar bear (VocD)
  2. U3-2 Polar bear (SplB)
  3. U3-3 Polar bear (Uns)
  4. U3-4 Clean cars (VocD)
  5. U3-5 Clean cars (SplB)
  6. U3-6 Clean cars (Uns)

Unit 4

  1. U4-1 Mona Lisa (VocD)
  2. U4-2 Mona Lisa (SplB)
  3. U4-3 Mona Lisa (Uns)
  4. U4-4 Angry Mountain (VocD)
  5. U4-5 Angry Mountain (SplB)
  6. U4-6 Angry Mountain (Uns)

Unit 5

  1. U5-1 Time Book (VocD)
  2. U5-2 Time Book (SplB)
  3. U5-3 Time Book (Uns)
  4. U5-4 Time Capsule (VocD)
  5. U5-5 Time Capsule (SplB)