This square, jacketed lift-the-flap book, printed on heavy stock, offers basic concepts couched within a simple friendship story. As Ivan, a green bird, drives to buy a gift for his friend Amy, he passes a series of gaily painted trucks. The festive goods they carry, from cake to party hats, are revealed by lifting die-cut flaps. The trucks‘ contents hint at the book‘s ending (a surprise party for Ivan, thrown by Amy), while the simple text reinforces numbers from 1 to 10 and identifies each truck‘s color.