Curriculum Associates Releases Door 24 — A New iPad® App That Builds Computational Fluency

Complements the award-winning i-Ready® Diagnostic & Instruction program 

NORTH BILLERICA, Mass., January 2, 2014—Curriculum Associates announces another addition to the i-Ready® Diagnostic & Instruction product line, winner of the 2013 CODiE Award for Best Student Assessment Solution, with the release of the second in a new series of educational games for the iPad®. These apps target the skills that are most essential for achievement in Reading and Mathematics and motivate students to develop these skills through the power of game design.

The release of Door 24 follows the successful launch of its companion app, World’s Worst Pet, which has been ranked as a Top 25 Education App on the App Store, featured as iTunes® Best New Education App, and named “App of the Week” by eSchool News.

Designed for grades 4–8, Door 24 helps students build their computational fluency and develop their ability to think quantitatively and strategically. Complementing i-Ready’s online adaptive diagnostic and instruction program, Door 24 goes beyond just having students memorize facts and procedures. The app’s focus on computational fluency supports problem solving and higher-order thinking and builds the mathematical processes and proficiencies that the Common Core State Standards (CCSS) identify in the Standards of Mathematical Practice (SMP).

“Door 24 is a continuation of our commitment to supporting teachers and students in a truly blended learning environment,” said Rob Waldron, CEO of Curriculum Associates. “Together with World’s Worst Pet and the assessment and instruction tools provided in i-Ready, teachers now have the most comprehensive solution to help them improve student outcomes and deliver long-term student achievement gains.”

Available for free through the App Store, students use their skills to help Bella and Beau—the onscreen characters from i-Ready’s online lessons—fix Victor the robot’s fried circuits and solve the secret of Door 24. 

During the game, students use number facts, order of operation, and number relationships to create expressions equivalent to 24. Students additionally learn strategies such as making tens, recognizing factors of 24, understanding relationships between operations, and more. At the end of every level, students are also presented with a challenge set that requires them to find as many expressions as possible that are equivalent to 24, given a particular number set.

The app can be downloaded at or by searching for “Door 24” in the App Store.

More About i-Ready Diagnostic & Instruction

Built for the Common Core, i-Ready Diagnostic & Instruction helps students make real gains. It combines a valid and reliable measure and personalized instruction into a single online product that saves teachers time at a fraction of the cost of similar products. 

The adaptive Diagnostic pinpoints student needs down to the sub-skill level and generates a combination of online instruction and downloadable teacher-led lessons that are unique to each student’s diagnostic result. These individualized learning plans are easy to understand and implement.  

i-Ready was named the winner in the Best Student Assessment Solution category of the 2013 Software & Information Industry Association (SIIA) CODiE Awards. The SIIA CODiE Awards are the premier award for the software and information industries and have been recognizing product excellence for 27 years. It was additionally named a winner of the Tech & Learning 2013 Awards of Excellence (AOE) in the Best Upgrade category.

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About Curriculum Associates

Founded in 1969, privately owned Curriculum Associates, LLC, designs research-based print and online instructional materials, screens and assessments, and data management tools. The company’s products and outstanding customer service provide teachers and administrators with the resources necessary for teaching diverse student populations and fostering learning for all students. For company and product information, visit Curriculum Associates on the Web at or call 800-225-0248.

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