My First Math Adventure Adding and Subtracting<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Ages 5-8: Working at their own pace， children will develop problem-solving skills， understand math symbols， and learn how to use numbers up to 100. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51XWEJzchFL.jpg" noproxy>