Open a Cube (2003)
Running time: 49 minutes
Description: A public research lesson taught by Akihiko
Takahashi to fifth-graders in the San Mateo-Foster City School District,
California, and attended by 100 U.S. educators. The lesson abridged
is followed by highlights of the lesson colloquium.
In this fifth-grade mathematics lesson, students solve a challenging,
open-ended problem by using their own prior knowledge, their investigations,
and classmates’ findings.
Mathematical highlights include:
About the Instructor: Akihiko Takahashi was an elementary
teacher in Japan for 19 years before becoming an educator of mathematics
teachers. During his elementary teaching career, he was nationally active
in mathematics lesson study and mentored 200 pre-service teachers. In
2002, he received his Ph.D. from the University of Illinois at Urbana-Champaign;
his dissertation research focused on internet use in mathematics education.
He is currently an assistant professor of mathematics education at DePaul
University in Chicago.