Once again the school bus and its occupants shrink down to a miniature size to accommodate the latest of Ms. Frizzle's unusual field trips. Wearing bee costumes complete with pollen baskets, the students must convince the guard bees that they're "family" in order to gain access to the hive. Luckily, the students have done their homework so they know just how to bee-have and, luckily, Ms. Frizzle has brought her bee pheromone spray along so that they'll smell like bees. Of course they pass the test and soon the class is abuzz with bee knowledge as they comb the area. Cole and Degen provide the usual mix of science and fantasy, sprinkled liberally with good humor and bad puns. This one hums. (Ages 4-9)