What does an Investigations classroom look and sound like? The videos below provide images of teachers and students at work in a range of fourth grade classrooms.
Students count around the class by 6. They pause partway through to think about how many students have counted, and how they know.
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A student shares her strategy for solving 424-289.
Students compare two strategies for solving 145 + 226, one of which is the US standard algorithm.
This class discusses the number of windows in a building that is 5 cubes high. The side of each cube has one window, and the “skylight” on top of the tower also counts as a window.