It is not easy to explain the elapsed time concept to children. Educational Insights designed a really great visual tool to introduce the time concept to kids. Teach Elapsed Time Clock Toy is easy to use, and clear to present non-electronic math toy. Shaped as 2 analog watches, this elapsed time teaching set features correlating digital clocks under the wristwatches. Move the minute hand on the first watch to the desired start time and the minute hand on the other watch to the end time - the digital clocks underneath automatically adjust! Teach Elapsed Time Clock Toy is a great quiz tool, too! Slide open the cover on the answer window to see the elapsed time or keep it closed to quiz the children. The other side of the time reading toy is clear, so the students can see clock gears in action. This elapsed time teaching tool from Educational Toys Planet comes with teacher's guide with multilingual instructions (English, Spanish, French, and German). Children at home or in a classroom will learn the elapsed time and practice time telling from the analog clocks.