Lesson Plan Day: 47            10/29

Teacher: P. Kirk

Subject: Science

Course: Chemistry


Ionizing radiation can harm living tissue.

Film and electronic methods can be used to detect radiation. 

Radioactivity has many applications.

Storage and disposal of nuclear waste pose important concerns. 


HS.PS1.C: Nuclear Processes
Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

Section 21.1: Nuclear reactions affect the nucleus of an atom.
Section 21.4: Nuclear Fission and Nuclear Fusion


Learn different methods can be used to detect radiation and discuss the effects that ionizing radiation can have on living tissue.

Discuss the common applications of radioactivity and uses for radioactive materials.

Discuss the Pros and Cons of using radioactive materials and the concerns about transportation, storage and disposal of nuclear waste. 

Participate in a lab simulating the half life process to gain an understanding of how materials decay over time. 


roentgen, rem, film badge, Geiger-Muller counter, scintillation counter, radioactive dating, radioactive tracer, nuclear waste  


S will read and take notes on 21.3 from PPT, text and available printable notes.  S will work alone or in small groups to complete Study Guide 21.3.   

S will work in small groups on the Isotopic Penny Lab. They will count out 100 pennies and place them all in the cup heads up. So, that they start with 100% or 100g of them all headsium. They will then shake the cup to simulate the "decay" process and dump the pennies carefully on the desk. Separate and count. Place the heads ONLY back in the cup and decay again. Repeating the process until all pennies have flipped which usually takes 7 to 9 half lifes or shakes of the cup.  


T will go over 21.3 PPT and monitor students as they work to complete Study Guide 21.3. T will copy and distribute Study Guide 21.3. 

T has access to and can demonstrate several devices that are used to detect radiation including Geiger counter and film badges.

T will introduce and lead students through the 100 headsium pennies being shaken and "decaying" into tailsium. Instruct and keep reminding them that the total number of tailsium keeps increasing (they ADD the number of tails each time). T can display on projector the data collection chart and finally the graphed data to show that with larger sampling the pennies approximate the halfing process.


21PPT, online printable notes, 21.3 Study Guide,  Radioisotopes resource page, periodic tables and calculators.    

Nuclear Box containing a variety of sources, detectors and other resources.

Isotopic Penny Lab papers, Lab graphs and the student cups containing 1oo pennies each.  


Students will submit for grading the 21.3 Study Guide. Formative assessment will be done as T monitors and assists students.

Collection and grading of group Isotopic Penny Lab papers will be a summative assessment of the teams participation and understanding of the half life concept.

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Last modified: 08/13/19