Math Masters Jr. vs Negative Numbers

This app makes math unforgettable. Never too easy, never too hard. Our award-winning technology adapts each lesson to fit and raise your child's capabilities. Designed by cognitive scientists, co-created with teachers, Math Masters Jr. is based on cutting-edge research in memory and learning. Math Masters Jr. helps children achieve rapid recall of essential math facts, using a knowledge-tracing algorithm that makes practice both effective and engaging. Tested with over 500 children in real classrooms, it’s a scientifically proven way to strengthen foundational math skills for Grades 2, 3 & 4. — WHAT WE TEACH — Grade 2: Addition, subtraction, multiplication preparation, and place value. Grade 3: Times tables, division, large numbers, and fractions. Grade 4: Advanced arithmetic, working with large numbers, and more fractions. — HOW WE TEACH — Personalized: Adaptive lessons that adjust to your child’s progress and pace. Tested & Trusted: Tested in over 11 classrooms with 500+ children. Science-based: Memory technology designed by neuroscientists for real retention. Carefully Gamified: A balance of learning and play that keeps kids engaged. Encouraging: Motivating and child-friendly feedback provided by Mr. Mouse — ACHIEVEMENTS — Winner of the Academic Startup Competition 2023 (Safe and Inclusive Society) Rated 4.35 / 5 by over 500 children for usability & learning efficacy, in a scientific study — PRIVACY — MemoryLab takes children’s privacy seriously and ensures that this app is compliant with data privacy laws: the GDPR. If you would like to learn more on what information we collect and how we use it, please read our privacy policy: https://memorylab.nl/privacy-policy-tafeltrainer The first lesson of each subject is free, but additional paid content is available. All material can be unlocked in one monthly / yearly subscription or lifetime purchase. The standard Apple Terms of Use apply to this app: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ STUDY SMARTER & LEARN FASTER - START LEARNING WITH MEMORYLAB!

Negative numbers finally make sense. Negative Numbers is a colourful maths game that teaches kids how numbers below zero really work — one friendly level at a time. No walls of text, no pressure. Just a cheerful penguin, a number line you can actually drag, and 100 levels that build real confidence. DRAG THE NUMBER LINE Every adding and subtracting question comes with a number line you can play with. Slide the ball left and right, watch the value change as you count, and see for yourself why −4 + (−2) lands on −6. It is a scratchpad, not a test — moving it never costs you points. 100 LEVELS ACROSS 8 WORLDS The course grows with your child, one skill at a time: • Below Zero — meet the minus and add negatives • Going Down — subtracting, and why two minuses make a plus • Mix & Match — plus and minus in the same puzzle • Sign Factory — multiplying with signs • Split the Sign — dividing with signs • Power Up — square numbers, and the bracket trap • Root Cave — square roots • Grand Master — everything, all at once LEARN FROM EVERY ANSWER Each level opens with a short lesson card and a worked example. Get a question wrong and nothing is lost — the game explains the mistake in plain language and lets you try again. Three questions clear a level, and a flawless run earns three stars. MADE FOR YOUNG MATHEMATICIANS • Big, chunky, colourful buttons built for small fingers • Hints whenever you are stuck • Encouraging feedback, never punishing • Progress, stars and scores saved automatically • Works beautifully on phone and tablet GREAT FOR • Kids meeting negative numbers for the first time • Anyone revising integers before a test • Parents and teachers who want practice that feels like play Free to play through the first 10 levels. One optional purchase unlocks all 100 levels and removes ads forever — no subscription, no renewals.