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Shelly Belleau's picture

ELLs and Science Practices

Fri, 06/05/2015 - 11:38 -- Shelly Belleau
more research

In a previous blog post, I shared my thoughts about the importance of science teachers (and all teachers, really) supporting their claims about lesson efficacy with evidence.  While this doesn’t always need to be a formal research study, it can often be valuable to publish findings that will be helpful to other science teachers.

 

Deanna Cullen's picture

Opportunities For Chemistry Modeling Training

Tue, 02/24/2015 - 18:02 -- Deanna Cullen
modeling training

The Modeling™ curriculum emphasizes modeling, collecting evidence, scientific discourse and development of conceptual understanding. All of these can be linked to AP and NGSS standards. If you are looking to make improvements in your curriculum and gain some impressive strategies, consider enrolling in a workshop this summer. There are many workshops scheduled around the country during the summer. A full curriculum and support materials are provided.


Mary Saecker's picture

JCE 92.01—January 2015 Issue Highlights

Thu, 01/15/2015 - 12:58 -- Mary Saecker
Journal of Chemical Education January 2015 Cover

A New Year with a New Volume of Resources The January 2015 issue marks the start of the 92nd volume of the Journal of Chemical Education and is now available online at http://pubs.acs.org/toc/jceda8/92/1. This issue features colorful chemistry; using stories and writing to learn; demystifying chemistry literature; cost-effective activities and materials; experimenting with chromatography and natural products. 

Larry Dukerich's picture

Conceptual Chemistry

Wed, 11/19/2014 - 16:19 -- Larry Dukerich
BCA charts

In a recent contribution to ChemEd X "Stoichiometry is Easy", the author states that he has "vacillated over the years between using an algorithmic method, and an inquiry-based approach to teaching stoichiometry. " I would like to suggest that there is another approach to mastering stoichiometry and that it should precede the algorithmic one: it is the conceptual approach based on a particle model to represent the species involved in chemical reactions.

DAVID LICATA's picture

Stoichiometry is Easy

Sun, 11/16/2014 - 20:30 -- DAVID LICATA
Keep Calm Stoichiometry is Easy

This article describes a three week lesson plan for teaching stoichiometry using an algorithmic method. Two labs (one designed as a laboratory quiz) several cooperative learning exercises, student worksheets and guided instructional frameworks (forcing students to develop good habits in writing measures and doing problem solving) are included. The highlight of the lessons is the "chemistry carol" (based on Felix Mendelssohn's music for "Hark! The Herald Angels Sing") in which students recite a five-step algorithm for completing stoichiometry problems. While algorithmic processes may not always be best, I have found that there are many benefits to giving students a firm background and something to always fall back upon in one of the more challenging topics of chemistry. I believe that the good habits developed in this method of stoichiometry carry through to all the rest of their chemistry work, making it much easier to use inquiry-based methods when doing other advanced chemistry topics.

DAVID LICATA's picture

Stoichiometry Guided Instructional Activities with Guide Framework

Sat, 11/08/2014 - 21:40 -- DAVID LICATA
Initial framework for use with stoichiometry GIAs

This set of three worksheets are intended to be used as collaborative "Guided Instructional Activities" (GIAs). Two students cooperate to complete the steps of a stoichiometry problem, alternately doing parts of the process as they explain what they are doing and evaluate their partner's work. These worksheets emphasize an algorothmic approach that helps students learn to think aobut the purpose of a question, organize their work, set it up so that it is easily readable and can be followed by others, and make good use of "unit analysis" (dimensional analysis).

Time required: 

Each of the activity worksheets requires 40 to 55 minutes.

DAVID LICATA's picture

Mole Conversion Guided Instructional Activities

Fri, 11/07/2014 - 23:37 -- DAVID LICATA
Mole Converstion Guided Instructional Activity Preview

The three "Guided Instructional Activities" in this activity are three cooperative learning pieces in which students are guided through the process of converting from one unit to moles (or moles to a unit) by the method of "unit analysis" (dimensional analysis). Students alternate steps in the process and evaluate the success of each step. They must do things such as writing the given information correctly, finding the correct molar mass, setting up the mathematics correctly, and determining the answer to a required number of significant figures.

Time required: 

Each of the activities requires about 40 to 55 minutes. The first one used usually takes longer, the last goes quicker.

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