SAND

Four grinning kids and a fuzzy, intent pooch frolic through a show-and-tell investigation of sand -- how does it feel? where do you fred it? how is it made? how do people use sand? It all looks like fun and the subject is a little less ephemeral than Sunlight (KR, 1974), but such discoveries as ""sand holds together only when it is wet"" or such projects as making your own sandpaper and pounding rock with a hammer to make sand are likely to slip right through wide open attention spans. Lightweight.