These Boom Cards were created with the littlest learners in mind. They are designed to be simple with minimal visual distractions for little ones. This set includes 20 cards to practice distinguishing between cold and hot.Boom Cards are:-engaging-paperless-perfect for virtual or in-class learning-self-correcting-FUN!!About BOOM Learning:To use Boom Cards, you must be connected to the internet. Boom Cards play on modern browsers (Chrome, Safari, Firefox, Edge). Apps are available for Android, I