Finger Numbers vs Place Value Chart

Finger Numbers is a motivating learning app that builds rapid quantity recognition (quasi‑simultaneous subitizing) and a robust sense of number and operations for early math. This release is a complete technical rebuild with expanded content—designed for children, parents, and teachers. What children practice: - Recognizing quantities at a glance and matching them with finger touches - Automating number decompositions, complements to 10, and strategies like the “Power of 5” - Moving fluently between representations (fingers, dots, mixed) Game and practice modes: - Basics: Fingers, Dots, Mixed - Pattern Recognition: structured arrangements - Calculation Strategies: Power of 5, complements to 10, How many are missing?, decompositions - Two Hands: cooperative/competitive split‑screen number decomposition - Jump and Run: an action mini‑game controlled by finger numbers Adapt to each learner: - Flexible number range from 3 to 10 fingers (start with 3-5 Fingers for learning the input) - Time pressure can be enabled/disabled as needed - Visual aids and flash‑view controls - Multi‑user profiles with individual progress; Guest mode without recording For teachers - Diagnostic reports with solution times, success rates, and strategy insights - Protected area to review learning progress - AI‑powered summaries with didactic guidance Note: On iPad, system gestures (e.g., 4–5‑finger gestures) may interfere with multi‑finger input. Consider disabling multitasking gestures in system settings if needed. Languages: German, English, Spanish, French, Japanese, Chinese (Simplified)

Experience grouping and ungrouping in our decimal number system with this interactive place value chart. Touch the chart to create tokens and move them around with your finger. Is this always possible? Remove tokens by moving them to the top of the chart. Shake your iPad or iPhone to remove all of them. Some activities supported by this place value chart: - How can you create large numbers using the least number of tokens? - How can you remove tokens quickly without shaking the device? - What happens if a token is moved from the hundreds to the ones? And what happens if you first move it to the tens place and then to the ones? This brand new version features new options to show totals, both as a number and in written english. Furthermore it is possible to use it for decimal fractions. The educational design of this interactive place value chart has been developed by Prof. Ulrich Kortenkamp (Didactics of Mathematics, University of Potsdam, Germany) and Prof. Silke Ladel (Didactics of Primary Education, Mathematics, Saarland University, Germany). It supports the development of mental concepts for place values in decimal systems and targets elementary and primary and lower secondary education.