Description: Montessori Sensorial Material - Thermic Bottles in Wooden Box. The thermic bottle is used to feel temperature. Excellent homeschool and classroom teaching material. Great sensory toys for children kids. Material: Metal, wood Specification: Carry the material to a mat or table. Set the lid to the right or the box. Remove one of the bottles by lifting it by its wire handle. Hold the bottle in one hand to get a sense of the temperature. Select another thermic bottle from the box and hold it in the other hand to compare the two. If the second one does not match, set it on the lid to the side of the box. When a match is found, set the two side-by-side in the upper left corner of the workspace. Return the bottles on the lid to the box. Repeat this process until all of the bottles have been matched. Return the bottles to the box in mixed-up order so the work will be ready for the next student. Size Chart: Box size: Approx. 19.5x10.5x9.5cm/7.68x4.13x3.74inch Bottle size: Approx. 4x11cm/1.57x4.33inch Package Includes: 1 Set Montessori Thermic Bottles Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may be 1-2mm error in size