Supplies:
Approximately 75yds per cup, any worsted weight (4) yarn (smiley face color, triangle color, contrast color)
My examples are made with Red Heart Super Saver Jumbo Stripes Retro Stripes and Caron One Pound
Size E, 3.50mm crochet hook
Scissors
Embroidery needle
OPTIONAL : stitch markers

Size:
Small (A-B), Medium (B-C), Large (C-D)

Abbreviations (US):
SC - Single crochet
DC - Double crochet
TRC - Treble crochet
Ch - Chain
Sl st - Slip stitch
X2 - Two stitches into the same stitch from previous row/round
MR - Magic Ring
Standing DC
Standing SC