Investigations in Number, Data, and Space

is a complete K-5 mathematics curriculum

that supports all students as they learn to

think mathematically. Investigations have

been carefully designed to engage students

in key mathematical content as they develop

number sense, learn to visualize and describe

geometric relationships, and collect and ana-

lyze real data. As they explore mathematical

problems in depth, students work together,

use a variety of concrete materials and

appropriate technology, and express their

mathematical thinking through talking,

drawing, and writing.