Longs (4L), Flats (4F) and Blocks (4B) This page contains a set of Base Four blocks.Use the unit blocks from Material Card 4 with this set of Base Blocks. Cut along all solid line segments. Each piece...Longs (4L), Flats (4F) and Blocks (4B) This page contains a set of Base Four blocks.Use the unit blocks from Material Card 4 with this set of Base Blocks. Cut along all solid line segments. Each piece is labeled. A Base Four Long is 1 cm by 4 cm and is labeled "4L". A Base Four Flat is 4 cm by 4 cm and is labeled"4F". The Base Four Block is 4 cm by 4 cm by 4 cm and is labeled "4B". Fold this 3-dimensional block along the dark dotted lines; then tape to make a cube.
