Second Grade – Modeling Erosion

After learning about the different ways the earth can erode, the students were able to actively investigate erosion by creating a land model made of sand.  They modeled how wind (blowing through a straw), earthquake (gently shaking the tray), ice (pushing ice cubes down the sand), and water (pouring 100 mL of water) erodes land.  They collected the amount of sand that went to the bottom of the tray and measured it in a graduated cylinder.  This was a great math connection to measuring and estimation

 

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