![]() ![]() For example, take carbon, which has an element symbol of C. To determine the number of protons in neutrons in an item you first need to get a periodic table. Educators earn digital badges that certify knowledge, skill, and experience. Calculate the atomic mass of any atom, in atomic mass units (amu) by adding the total number of neutrons and total number of protons. Save time lesson planning by exploring our library of educator reviews to over 550,000 open educational resources (OER).Īn all-in-one learning object repository and curriculum management platform that combines Lesson Planet’s library of educator-reviews to open educational resources with district materials and district-licensed publisher content.Ī comprehensive online edtech PD solution for schools and districts. Timely and inspiring teaching ideas that you can apply in your classroom Manage saved and uploaded resources and foldersīrowse educational resources by subject and topic Search reviewed educational resources by keyword, subject, grade, type, and more ![]()
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