The granny stripe circle is a lovely pattern to make mandalas, coasters, table(cloths) placemats, use for round cushions, and the list goes on if you have an adventurous and wild imagination.
Here's how to make one.
* DK yarn in as many colors you'd like and a 4 mm hook
* scissors and a tapestry needle for weaving ends
You may want to work ends/tails as you go. Learn how I do that here.
Stitches in US terms: chain (ch), slip stitch (sl st), chain space (ch-sp), double crochet (dc).
Measurements of sample circle:
Foundation and round 1: In color 1, ch4 (counts as 1dc+1 ch) and in last st from hook, d1, ch1 eleven times (12 dcs -we are going to retain this number in the next rounds as well). Sl st with first st to end round.
Round 2: Insert color 2 in ch-sp (any, I usually do it in the one before the last of round 1), ch3 (counts as the 1st dc) and dc1, ch1, and in next and all other ch-sps, dc2, ch1. Sl st with 1st st to end round.
Round 3: Insert color 3 in ch-sp, ch3 (counts as the 1st dc) and dc2, ch1, and in next and all other ch-sps, dc3, ch1. Sl st with 1st st to end round.
Round 4: Insert color 4 and repeat round 3. (Repeat round 3 to increase the circle to your desired size.) Sl st with 1st st to end round.
Round 5: Insert color 5 in ch-sp, ch3, dc2, ch1, dc3. In next (and all other ch-sps) work this pattern: dc3, ch1, dc3. When last ch-sp is filled, sl st with 1st st to end round.
Round 6: Insert color 6 in ch-sp, and repeat round 5. Work rest of tails.
Hope you have fun!