OBBL Ideas

Hints and Ideas:

* Yellow arch pieces have "glue." They can stick together in certain ways.

* Two small yellow quarter-circle arches can support a horizontal yellow block between them.

* You can build layers of arches on top of other layers.

to return to the OBBL Architecture Blocks

Math Cats' OBBL Idea pages © copyright 2002 -   by Wendy Petti of Math Cats.   All Rights Reserved.