New: Calculation Jumps – reach the target number with as few calculation jumps as possible (+, −, ×, :, jump to the next ten); Number Pong – a Pong-style game: move the number line so that the target number is where the ball hits; single-player and two-player mode. Interactive introduction: when opening the number line for the first time, and anytime via the ? icon, a short voice-guided interactive tour explains all features. The AI tutor shows hints on the number line: together with spoken guidance, it can highlight numbers, mark the midpoint, show helper lines, or zoom in – offering orientation without revealing the solution. Diagnostic note after each exercise (strategy, possible misconception, next learning step) – visible in the learning progress report. Guide for “Calculation Jumps” (overview card at the start + explanatory tour via ?). AI learning progress report with competence-oriented feedback on each child’s strengths. Improved Easier creation of child profiles (the checkmark confirms the name and immediately selects it). Better display of decimal and negative numbers, dynamic zoom, fairer AI use, faster AI model, and offline notices. Optimized stability, speed, and layout. Fixed Speech bubble text appears immediately; final score is calculated correctly; various layout/display issues and gesture conflicts have been fixed.

New: Number Line as a complete learning environment – not only AR, but also a classic (non-AR) number line. New: Multiple exploratory environments for discovering numbers, positions, and distances. New: Many additional exercises and learning games for individualized, adaptive practice. New: AI tutor with helpful feedback in case of errors (optional, can be switched off).

Numerous improvements Input possible via crosshair Integration of research tasks (Number Line Estimation Tasks)

• Significant performance improvements for long number lines through dynamic display based on distance • Improved presentation (backgrounds for text) • Added option to darken the camera image for better contrast • Added option to move pins by long-pressing and dragging • Added option to delete pins by long-pressing and quickly dragging up or down • Multiple numbers can now be marked • Negative numbers on the number line can now be shown or hidden • Team mode allows syncing number lines across multiple devices • Color selection is now possible to customize the appearance of number markings and connecting arcs • Localization for English, French, and Spanish added • Numbers can now also be edited by tapping on the number display and tasks at the top of the screen, creating a synchronized representation between symbolic, iconic, and enactive levels • Localizations added (English, Spanish, French, Italian) • More settings options (e.g., automatic color changes, showing or hiding numbers, etc.) • Haptic feedback added for supported devices • Bug fixes