If I pour water from one container to another, do I now have more/less water than before?
To adults, this is really a no brainer, but not so for a preschool who basically operates on ‘WYSIWYG’. Lower water level means less water.
We take for granted many things which does not come naturally for young children. Maths sense is something that can be taught and developed. Most of the time, developing maths sense does not involve complicated CD-Rom games or worksheets. Hands-on exploration is far more effective as the child uses all his senses to assess, explore and make deductions.
Right now, we are doing Volume and Capacity for maths. It will take a few more sessions like the above and more time spent in the bathroom (mess containment strategy). It makes maths fun!