Gel mathematical symbols. These are children's toys for learning mathematics. The five symbols represent the basic mathematical symbols used in arithmetic,from left: addition,subtraction,multiplication,division,and,at far right,the equals sign | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Sambraus, Daniel |
Taille de l’image : | 5157 px × 3425 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |