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"Toys are children's angels" and "Toys are the first textbook for children to learn". Toys not only bring joy to children's lives but also promote their intellectual development.
While some may view toys as a means for parents to relax while their child plays, it's important for parents to play with their child for their development. Playing with toys can improve parent-child interaction.
The principle of the floating pen is based on the floating and sinking conditions of an object. Since the density of the pencil is less than that of water, it will float on the water surface when it is still.
Developing intelligence through playing with educational toys has been found to be beneficial for the health of both the left and right brains, and can help prevent senile dementia.