Meet Tim Yetzina

  Tim Yetzina is the Senior Supervising Editor for STEM at Westchester Education Services. Read on to learn more about how Tim’s wealth of knowledge and experience are beneficial to our clients as well as their end customers, the students who learn important math and science principles from the material that is created. The majority…

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Phenomena for Next Generation Science Standards

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by David Bailis, STEM Content Director The Next Generation Science Standards (NGSS) are different from the science content standards of old because they are not simply based on knowing random science content. Before the NGSS, a student may have been asked to know only the three basic states of matter: solid, liquid, and gas, and…

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