Seems to have an arbitrary limit on the number of markers that can be placed -- so it's difficult to demonstrate the Sieve of Eratosthenes using a different color for each multiple of the first few primes. Also, removing a marker is difficult and haphazard. An undo button would be useful in addition to the eraser button which clears ALL of your work. Overall, a very handy app for teachers. I'm grateful.
Works well, however there should be a way to erase just one number without erasing all the numbers on the chart. Sometimes you just touch a number by mistake but with this current program set up you have to erase all the numbers you have been working with in ordered to get that "one" erased.
This is a great app with many features. It's nice to be able to remove any marks from the number line. With numerous ways to mark numbers kids can get a better sense of the numbers and their many multiples. The speech setting is great. The voice clearly pronounces the numbers.
This is a well designed math app! Artsy and fun to interact with. From basic to more advanced, the PDF lessons & instructions are very helpful. This app didn't look as cute as some other children's math apps so I almost skipped by it. Very glad I purchased it!
Hands-On Math: Interactive Hundreds Chart creates a virtual math playground where students explore, investigate and discover mathematical concepts. Students use colored markers on the Interactive Hundreds Chart to represent patterns and number sequences. Using Hands-On Math: Interactive Hundreds Chart students can develop the following important mathematical concepts: Skip-Counting Number Patterns Multiplication and Division Facts Prime and Composite Numbers Least Common Multiple Divisibility of Numbers and more... An extensive Instructor's Guide for this app is available at the support website. Download the document and install it in iBooks to access ideas about how to use the Interactive Hundreds Chart for teaching elementary mathematics. Extremely easy for students and teachers to use. Tap a color and a marker, then tap numbers on the chart. To remove a marker simply slide it off the chart. Erase all markers by tapping the eraser. Note to reviewer: Simply slide a marker off the board to remove it. There is no need to erase entire board if you make a mistake.
