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Modeling / Problem Solving / Rich Tasks / Investigations Files

1000 Problems

Added 01.11.24

  • Four classic problems related to the number 1000

10p Change Investigation

Added 01.09.11

  • Looking at combinations

11 Problems

Added 01.09.11

  • A selection of problems

A Radical Problem

Added 02.09.24

  • A classic problem leading to interesting reasoning with radicals

Adult Age

Added 01.09.11

  • A number puzzle / trick

Alphabetables

Added 29.07.11

  • A puzzle that encourages thinking about multiplication tables and patterns

Amazing

Added 01.08.14

  • A simple maze activity with lots of arithmetic practice

An Age-Old Problem

Added 23.08.24

  • A set of problems inspired by the famous Diophantus' Riddle

Arithmagons

Added 29.09.11

  • Various arithmagon worksheets including decimal and algebraic

Balancing

Added 17.01.16

  • A task focused on addition of directed numbers based on the format developed by Whit McMahan

Bricks

Added 01.09.11

  • A number investigation

Bridge Crossing

Added 29.10.24

  • A classic problem requiring a good dose of logical thinking

Bridges Investigation

Added 01.09.11

  • Looking at load and force

Chains

Added 01.09.11

  • A number investigation

Circle Sums

Added 15.05.21

  • A classic number puzzle