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Worksheet
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\n\"What\n\n
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\nCurated OER\n
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\nWhat are Atoms?\n

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\n\nFor Students\n\n9th - 12th\n
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\nIn this atom learning exercise, students read about Dalton's contributions to the structure of the atom. They answer five questions about Dalton's ideas, the law of multiple proportions and the law of definite proportions.\n
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Worksheet
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\n\"The\n\n
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\nThe \"Laws\" and Principles of Chemical Reactions\n

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\n\nFor Students\n\n10th - 12th\n
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\nIn this chemical reaction principles worksheet, students read about definite proportions and the law of conservation of mass. Students read about how to balance a chemical equation. Then students complete 20 fill in the blank, 2 short...\n
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Worksheet
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\n\"Early\n\n
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\nCurated OER\n
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\nEarly Atomic Theory Homework\n

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\n\nFor Students\n\n9th - 12th\n
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\nIn this early atomic theory worksheet, students answer 4 questions about the Law of Definite Proportions, the Law of Conservation of Mass and Dalton's Laws. Students are given 5 statements to determine if each true statement supports or...\n
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Worksheet
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\n\"The\n\n
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\nCurated OER\n
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\nThe \"Laws\" and Principles of Chemical Reactions\n

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\n\nFor Students\n\n10th - 12th\n
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\nIn this chemical reactions worksheet, students review the law of conservation of mass, the principle of definite proportions, and balancing equations. This worksheet has 3 problems to solve.\n
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Instructional Video3:45
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\n\"What's\n\n
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\nWhat's a Proportion?\n

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\n\nFor Teachers\n\n6th - 8th\n
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\nProportions are representations of equal ratios. Ratios can be expressed in many ways and still be of equal value. Think of all the ways to write one half. Endless ways. These are all proportional ratios. Watch the video and see.\n
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Instructional Video4:57
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\n\"How\n\n
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\nCurated OER\n
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\nHow Do You Solve a Problem Using Indirect Measurement with Shadows?\n

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\n\nFor Teachers\n\n6th - 12th\n
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\nUsing indirect measurement, this video shows viewers how to find the height of a flagpole. The lecturer employs drawings as well as proportions to solve this problem, explaining each step. A useful resource to aid struggling learners and...\n
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Instructional Video4:22
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\n\"How\n\n
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\nCurated OER\n
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\nHow Do You Solve a Problem Using Indirect Measurement with Shadows?\n

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\n\nFor Teachers\n\n6th - 10th\n
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\nUsing indirect measurement, this video shows viewers how to find the height of a flagpole. The lecturer employs drawings as well as proportions to solve this problem, explaining each step. A useful resource to aid struggling learners and...\n
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\n\nGet Free Access\n\nSee Review\n
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Lesson Plan
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\n\"The\n\n
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\nThe Energy Debate - Stoichiometry\n

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\n\nFor Teachers\n\n9th - 12th\n
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\nStudents determine crude oil can be separated into useful fractions by a process of fractional distillation. They write a balanced equation for the reaction between a hydrocarbon and oxygen.\n
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Worksheet
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\n\"Chemical\n\n
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\nCurated OER\n
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\nChemical Reactions\n

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\n\nFor Students\n\n7th - 12th\n
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\nIn this chemical reactions worksheet, students compare endothermic and exothermic reactions, closed and open systems, and reactants and products. Students review physical and chemical changes and how to balance equations. This worksheet...\n
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Worksheet
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\n\"Chemical\n\n
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\nCurated OER\n
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\nChemical Compounds\n

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\n\nFor Students\n\n10th - Higher Ed\n
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\nFor this chemical compounds worksheet, students write the name of compounds from their chemical formula, balance equations, write electronic configurations for elements, and draw Lewis dot structures. This worksheet has 8 fill in the...\n
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Worksheet
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\n\"Atomic\n\n
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\nAtomic Theory, Structure, and Symbols\n

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\n\nFor Students\n\n10th - Higher Ed\n
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\nIn this atomic theory worksheet, students review the observations that led to the conclusion of the atom having a positively charged nucleus. Students compare atomic number and mass number and explain how the discovery of subatomic...\n
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Unit Plan
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\n\"Ck\n\n
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\nCK-12 Foundation\n
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\nCk 12: Chemistry: Law of Definite Proportions\n

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\n\nFor Students\n\n9th - 10th\n
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\n[Free Registration/Login may be required to access all resource tools.] Explains the law of definite proportions.\n
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Activity
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\n\"Serc:interactive\n\n
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\nScience Education Resource Center at Carleton College\n
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\nSerc:interactive Study: Laws of Conservation of Mass and Definite Proportions\n

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\nDalton's Playhouse is an interactive concept simulation meant to convey fundamental concepts in chemistry, including the law of definite proportions, the law of multiple proportions, and the law of conservation of mass.\n
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Unit Plan
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\n\"Ck\n\n
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\nCk 12: Atomic Theory\n

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\n\nFor Students\n\n9th - 10th\n
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\n[Free Registration/Login may be required to access all resource tools.] In this online tutorial students will explain the law of conservation of mass, the law of definite proportions, and the law of multiple proportions. They will also...\n
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Unit Plan
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\n\"Cuemath:\n\n
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\nCuemath\n
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\nCuemath: Proportion\n

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\n\nFor Students\n\n9th - 10th\n\nStandards\n
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\nA comprehensive guide for learning all about proportions with definitions, proportion formulas, types of proportions, properties of proportions, the difference between ratio and proportion, solved examples, and practice questions.\n
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Article
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\n\"Universe\n\n
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\nOther\n
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\nUniverse Today; What Is John Dalton's Atomic Model?\n

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\n\nFor Students\n\n9th - 10th\n
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\nArticle explaining the legacy of John Dalton. His research into gases led to his gas laws and then his proposed atomic model. The flaws in his atomic theory are discussed also. (Jan. 20, 2016)\n
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Unit Plan
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\n\"Ck\n\n
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\nCk 12: Evolution of the Atomic Model\n

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\n\nFor Students\n\n9th - 10th\n
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\n[Free Registration/Login may be required to access all resource tools.] Students take a closer look at how our understanding of the atom has evolved over time.\n
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Instructional Video
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\n\"Sophia:\n\n
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\nSophia Learning\n
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\nSophia: Similar Triangles: Lesson 3\n

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\n\nFor Students\n\n9th - 10th\n\nStandards\n
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\nIn this lesson, you'll learn the definition, proportion, and notation of similar triangles. It is 3 of 5 in the series titled \"Similar Triangles.\"\n
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Instructional Video
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\n\"Sophia:\n\n
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\nSophia Learning\n
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\nSophia: Similar Triangles: Lesson 4\n

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\n\nFor Students\n\n9th - 10th\n\nStandards\n
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\nIn this lesson, you'll learn the definition, proportion, and notation of similar triangles. It is 4 of 5 in the series titled \"Similar Triangles.\"\n
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\n\nGet Free Access\n\nSee Review\n
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Instructional Video
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\n\"Sophia:\n\n
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\nSophia Learning\n
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\nSophia: Similar Triangles: Lesson 5\n

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\n\nFor Students\n\n9th - 10th\n
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\nIn this lesson, you'll learn the definition, proportion, and notation of similar triangles. It is 5 of 5 in the series titled \"Similar Triangles.\"\n
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\n\nGet Free Access\n\nSee Review\n
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Instructional Video
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\n\"Sophia:\n\n
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\nSophia Learning\n
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\nSophia: Similar Triangles: Lesson 1\n

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\n\nFor Students\n\n9th - 10th\n\nStandards\n
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\nIn this lesson, you'll learn the definition, proportion, and notation of similar triangles. It is 1 of 5 in the series titled \"Similar Triangles.\"\n
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\n\nGet Free Access\n\nSee Review\n
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Whiteboard
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\n\"Class\n\n
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\nClassFlow\n
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\nClass Flow: Balancing Chemical Equations\n

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\n\nFor Teachers\n\n9th - 10th\n
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\n[Free Registration/Login Required] Students learn how to balance and interpret chemical equations and cover the law of definite proportions and mole ratios. Done in an engaging fashion. Assessment is paper written.\n
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