Workshops that train teachers to assess, instruct and accommodate students with deficits in math skills, including dyscalculia. Teachers learn to structure lessons at the concrete, pictorial, symbolic and application levels. Featured approaches include the use of manipulatives for basic operations, fractions-decimal-percent, geometry, and algebra. Specific programs may include Numicon, Semple Math, Touch Math, Singapore, Decimal Squares, Polydron Frameworks, or Algeblocks.