Orange (colour) and absorb mostly greenish-blue light. (See also shades of orange). Other orange pigments include: The orange colour of carrots, pumpkins, sweet potatoes, oranges, and many other fruits and vegetables comes from carotenes, a type of photosynthetic pigment. These pigments convert the light energy that the plants absorb from the sun into chemical energy for the plants' growth. The carotenes themselves take their name from the carrot. Autumn leaves also get their orange colour from carotenes. When the weather turns cold and production of green chlorophyll stops, the orange colour remains. Before the 18th century, carrots from Asia were usually purple,
SCALE-UP boards nearby. Each team has a laptop in case they need web access. The original design called for 11 round tables of nine students, but many schools have smaller classes while a few have even larger ones. Smaller classes, particularly those in high schools, have also been using D-shaped tables that seat six students. SCALE-UP SCALE-UP is a learning environment specifically created to facilitate active, collaborative learning in a studio-like setting. Some people think the rooms look more like restaurants than classrooms. The spaces are carefully designed to facilitate interactions between teams of students who work on short, interesting tasks.