PreSchool-- Two concept books with stiff pages and a spiral binding that use vivid colors and a simple poster art style to create a rainbow effect as each subsequent page becomes larger. The first page of Colors reveals a fire engine labelled "red." Each new electric hue displays a familiar scene: "green" is a pond environment, "orange" a jack-o-lantern. Not all of the selections are appropriate, as with a meadow in unpleasant shades of purple. The confusing final page, which is an unsuccessful attempt to draw the book to a conclusion, is labelled "black," but all of the colors are present. The more favorable Numbers begins with one chicken and ends with ten cars. Each page has an Arabic numeral, a group of common objects, and a like number of dots which lends itself to the progression to larger pages.