Save Patch is an educational video game designed to promote student understanding of two foundational ideas about fractions and rational number addition: (a) the size of a rational number is relative to how one whole unit is defined; and (b) only identical units can be added to create a single numerical sum. (cresst.org)
Many of the ideas of those abstractionists soon found a place in the academy, as the model put forward by faculty of the Bauhaus in Germany and the Vkhutemas in Russia became foundational ideas for today's art school curriculums. (newamericanpaintings.com)
Nonetheless a number of foundational ideas recur throughout his theology and give it shape and form. (faith.org.uk)