Nine Times Four Equals Thirty-Seven [9 X 4 = 37]

Simon Fraser University, Vancouver, British Columbia: 16mm.
"By using pebbles, blocks, rods, colored lines and tables to learn mathematics, teachers help students extract patterns andrelationships and systems. Shows how students master computation much earlier than usual. Examples include a boy who first proves to himself that 'nine fours is thirty-seven', only to change his mind after recess; and some 5th graders who multiply together two four-figure numbers in their heads, writing down only the answer."