Teach students to think, not just compute, as they build understanding of multiplication, division, decimals, and fraction concepts. Included are an optional pre-algebra chapter and further development of estimating and problem-solving skills. The Student Worktext provides activities with Captain Bailey and his sea gull, characters in a sea-adventure theme. The Teacher's Edition includes skills practice, a spiraling review, and an explanation of the use of manipulatives. It also provides information about teaching fact memorization as well as games and bulletin board ideas. - Publisher.