Think Math! is founded upon the principle that children are curious problem solvers. Each grade level’s content builds a puzzler’s disposition, developing mathematical “habits of mind” through games, puzzles, mental math, and other collaborative activities – with the goal of providing engaging and motivating experiences for a community of diverse learners.
In Think Math!, fourth graders deepen their understanding of multiplication, division, fractions, and geometric figures. They focus on decomposing and recomposing, using groups and arrays to facilitate multiplication, eventually moving to multiplying multi-digit numbers – and explore division, finding quotients of multi-digit dividends and one-digit divisors. Children “zoom in” on fractions and decimal fractions, finding equivalent fractions and decimal fractions and comparing them by size and location on the number line. Finally, fourth graders classify geometric figures based upon their properties, paying particular attention to properties of angles.
The Grade 4 Teacher Guide can found online at Delta Education. All student materials can be accessed through the table below as PDFs by chapter.