The Unintended Consequences of TERC Investigations
A parent and math remediation specialist has made a video showing a third grader attempting to add some large numbers using techniques she learned in TERC’s “Investigations” and using the “standard algorithm” of stacking the numbers and carrying.
Math Education: An Inconvenient Truth
Math Education: A University View
Vi Hart's Doodling in Math Class video "Snakes and Graphs"