Understanding+day+2

1. [|Show abacus](aided in counting, digital mechanical device)
 * = **LFS Lesson Plan** ||
 * **Unit EQ: How do computers make students or employees more productive.** ||
 * **LEQ: What are the milestonse in the development of the modern computer** ||
 * **Activating Strategies: Show video  ** ||
 * Acceleration/Previewing/Vocabulary: abacus, mechanical/analog Eniac/vaccum tube/digital transistor, integrated circuit, PC ||
 * Teaching Strategies and Distributed Guided Practice/Summarizing Prompts:
 * Structured note taking (Flowchart timeline)**
 * Lower deck (each bead value=1)
 * Upper deck (each bead value=5)
 * 2. Demo [|Mechanical calculator](relied on gear movement and readout)
 * Gears wear and become innaccurate

3. [|Vacuum tube](show examples) 5. Transistors/Integrated circuit 6. Result - computers became smaller, faster, less expensive and more reliable ||
 * Switch with no moving parts
 * Large and burn out (light bulb)
 * 4. [|ENIAC] (17,468 tubes) digital/electric/binary
 * Smaller switches (with no moving parts)
 * Reliable, bunched together to create integrated circuits to perform repetitive tasks
 * Summarizing Strategies: ||