How many beads are there in the box of Mathematics 97 in the first volume of Hebei Education Edition?

The number of beads in the box is odd, which may be 1. Students observe and find independently, and then communicate and express in groups.

Hebei Education refers to Hebei People's Education Publishing House, generally referred to as Hebei Education Edition. There are not many computer versions used by school students, which are limited to some schools in Hebei Province.

Most people use the People's Education Edition, and Hebei Education Edition is also good, but some resources of Hebei Education Edition on the Internet are very, very few, and no one teaches the edition to be rich.

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