The Basic K5 Concept Cards are used in the introduction, reinforcement, and practice of concepts taught in Abeka Skills Development and Numbers curriculum. The cards are designed to make teaching and review more effective. Included in the set are shapes, three-dimensional objects, basic geometric shapes and concepts, charts and graphs, comparisons, fractional parts, number words, counting by tens, sequencing, and arithmetic symbols. 16 cardstock full-color, double-sided sheets with 4 cards (designed to be cut apart) on each sheet for a total of 64 cards.