Xyla and Yabu vs Teachley Mt. Multiplis Usage & Stats
Help Xyla and Yabu trade gems back and forth by learning to add and subtract with number bonds. Use the relative sizes of number bond bars representing parts and wholes to develop number sense while solving word problems. Understand and become automatic at using tens, doubles, and other recurring patterns with numbers.
Each number bond is presented in the context of a problem that Xyla and Yabu pose for themselves. After mastering sums up to 20 (14 activities), kids explore similar patterns with sums up to 100 (13 activities), for 10 levels in all.
The game-like recognition format, in which kids choose the correct answer from three choices, provides immediate feedback in a non-busy environment conducive to thoughtful exploration.
Features:
•Number bonds present addition and subtraction facts simultaneously in terms of parts and wholes.
•Sizes of bars in number bonds show the relative sizes of quantities.
•Story format with characters Xyla and Yabu provides context for word problems.
•Activities increase in difficulty, starting with sums up to 5 and gradually increasing to sums up to 100.
•Patterns include: Counting On (+1 and +2), Doubles, Doubles +1, Making Tens, and Using Tens to make larger sums.
•Missing number activities, most with picture or bar hints, let children start forming foundations for understanding equal expressions in algebra.
•Recognition format, in which kids choose the correct answer from three choices
•Requires only single touches
•Self-contained; children will not see ads and will not have access to in-app purchases or Internet from within this app
Visit the website to download a checklist of activities and suggestions of ways to use this app in a classroom or at home.
- Apple App Store
- Paid
- Education
Store Rank
- -
Winner of Editor's Choice Award - Children's Technology Review and Parent's Choice Award!
What are people saying?
“Mt. Multiplis is not just focused on getting the answer, but also understanding the process of multiplication and the strategies that kids need to develop. I love how this app supports my students’ thinking in a way no other app does.” - Alana S., K-5 Special Education Teacher
“I really like how Mt. Multiplis combines the area model and the number line. It’s helped my students demonstrate their understanding across representations.” - Yvette B., 3rd grade teacher
About the game:
Linka gets caught in a terrible storm while flying home after a successful treasure hunt. She escapes but her plane isn’t as lucky. Help Linka make her way through Mt. Multiplis by building bridges, unlocking treasure, and earning gems. Rebuild Linka’s plane by collecting the pieces from the greedy Crags who live on the island.
Developed by teachers and experts in children’s cognition and learning, Mt. Multiplis is an engaging game that teaches multiplication through the commutative and distributive properties. While most multiplication apps focus on drill with digital worksheets and flashcards, Mt. Multiplis scaffolds learning to promote conceptual understanding, efficiency with multiplication strategies, and fact fluency.
The Common Core State Standards expect third graders to use the distributive property when multiplying (CCSM.3.OA.B.5): “Knowing that 8 × 5 = 40 and 8 × 2 = 16, one can find 8 × 7 as 8 × (5 + 2) = (8 × 5) + (8 × 2) = 40 + 16 = 56.” Mt. Multiplis is designed to make this complex content more approachable and fun for kids. Students can think strategically, seeing how 7 x 8 is the same as 5 groups of 8 plus 2 more groups of 8.
Supports Response to Intervention programs:
Mt. Multiplis is a great tool for classroom teachers looking to differentiate instruction for students. The app is also great for parents who want to support their children’s learning.
Recommended Grades: 3rd-5th (6th-8th intervention)
Meets Common Core Math Standards:
-3.OA.A.1 -3.OA.A.3 -3.OA.A.7 -3.OA.B.5
About Teachley:
Founded by former teachers, Teachley uses cognitive science research to create apps that teach effective learning strategies and assess what kids know within engaging games. Our team includes experts in cognition and learning, award-winning creative talent and game designers.
*This app was made possible by the US Department of Education, with funding provided by the Institute of Education Sciences’ SBIR program.
- Apple App Store
- Paid
- Education
Store Rank
- -
Xyla and Yabu VS. 
Teachley Mt. MultiplisJanuary 1, 2025