Presents an investigation that focuses on estimation skills as children attempt to solve problems involving concepts of weight, volume, and counting money. (ASK)

Describes the history of the World's Largest Mathematics Event and how it has been used by several classroom teachers. (ASK)

Describes a mathematical investigation of gold--how it is weighed, stored, used, and valued. For grades 3-4, children estimate the value of treasure chests filled with gold coins and explore the size and weight of gold bars. Children in grades 5-6 explore how gold is mined and used, and how the value of gold changes over time. (PVD)

Presents lessons and reproducible student worksheets for grades three to four and grades five to six to investigate large numbers and comprehend their magnitude. (MKR)

Presents a collection of problem-solving tasks focusing on mathematical situations that often have surprising results. This hands-on investigation invokes problem solving and reasoning, requires communication skills, and encourages identification of connections among various mathematical concepts. A Heads-or-Tails Toss encourages children to…

Students in grades three to four can collect, analyze, and represent data in order to determine which piece of playground equipment appears most popular. Students in grades five to six can investigate the geometry of playground structures using measurement and scale models. Lesson plans and reproducible worksheets are included. (CMS)

Presents activities that center on the excitement of going back to school by collecting and analyzing data and exploring probabilities. Contains reproducible student worksheets. (MKR)

Describes data analysis activities for grades three through six using unshelled peanuts. Includes two reproducible student worksheets. (MKR)

This month's investigations deal with patterns and the importance of looking at data from more than a single perspective. The investigations focus upon ordering animals in some way. Includes reproducible student worksheets. (MKR)