Mystery Sensory Balls EDR MLE31001 volume and measurement with these

volume and measurement with these invaluable hands-on tools

4 small bodies

weighted pieces for delightful experimentation

Also great for fine motor skills and imaginative play

Mystery Sensory Balls EDR MLE31001 volume and measurement with theseSome wobble when rolled, or turn and won't roll in a straight line, some feel funny when twisted, spun or shaken and others make different shaker or rattle sounds. The shiny mirror surface provides a distorted fish eye lens reflection which is fascinating for children to observe. They are robustly constructed from hard wearing stainless steel, are lightweight, smooth and tactile to handle. Balls measure 3. 94" diameter. Set of 6. Ages birth and up.