## Promoting Number Sense and Flexible Thinking

Strong math thinkers are flexible about their thinking: in order to determine an efficient and mathematically sound strategy, and to make mathematical connections to support future learning, they develop a sense of quantity, and whether an answer is reasonable. These apps help foster that kind of strong mathematical thinking!

*Questimate!*

Link to App Store: Questimate! (iPad only)

Price:

**Free**/ additional content available for purchase

How many giraffes would be as tall as the Statue of Liberty? How fast is the world's fastest train? How many jelly beans would it take to fill up a soccer ball? In what year was the cell phone invented?

*Questimate!*(for iPad and iPad mini) has thousands of fascinating questions for you to create, estimate, and share. Fun and challenging for the whole family.

*Door 24*

Link to App Store: Door 24 (iPad only)

Price:

**Free**

Players think flexibly about addition, subtraction, and multiplication as they fix Victor the robot's circuits and solve the mystery behind Door 24. Similar to the game "24."

Help your students achieve computational fluency – an integral part of success in mathematics! Aligned to the Common Core, Door 24 provides targeted practice in the use of basic facts, number sense, and algebraic thinking. Students can work through 6 different levels and multiple problem sets.

*Pick-a-Path*

Link to App Store: Pick-a-Path

Price:

**Free**

Another great game for promoting flexible thinking! To help Okta reach the target (maximum, minimum, or a specific value), choose a path from the top of the maze to the bottom. There are multiple solutions, and players earn extra points for hitting close to the target.

Seven levels with seven puzzles will test your skills with powers of ten, negative numbers, fractions, decimals, and more. How many starfish can you earn?

*SolveMe Mobiles*

Link to App Store: SolveMe Mobiles (iPad only)

Price:

**Free**

Use logic to figure out how much each shape must weigh for the mobile to balance! These mobiles will appeal to puzzlers ages 6 to adult. Added bonus: Solving these puzzles is a fun way to learn to solve equations in a visual and interactive way!

*Zoombinis*

Link to App Store: Zoombinis

Price:

**$4.99**

This game, a reboot of the computer game "The Logical Journey of the Zoombinis," promotes logical thinking and problem solving.

Play Zoombinis and guide the little blue creatures through fun and increasingly challenging puzzles on their way to a new home.