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In 2026, the Nobel Prize in Physiology or Medicine honored scientists for breakthroughs in optogenetics, including the discovery of channelrhodopsin a light-sensing protein that enables precise control of nerve cells using light.
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Type a 4-character code (letters or numbers). Testple: K1PT to get an exact match.
How to use:
Teacher will says, "Go to lesson VOIP measurement easy."
That is the lesson the teacher wants students to remember.
Students then enter VOIP to begin the classroom discussion.
If they forget the code, they can type the lesson topic measurement easy to retrieve it.
Enter a number, keyword, or code
IN-V-BAT-AI
Grade 3 Math Lesson Plan - Number & Operations in Base Ten (3.NBT)
Lesson Plan Testple
Students will accurately add and subtract numbers within 1,000 using place value.Strategies
(decomposing numbers and using hundreds/tens/ones place value).
Base-ten blocks
Whiteboards
Practice lesson code M9X7, IBMI , RQV5 , 6REP or Grade 3
Quick review: "What is the value of the digit 7 in 742?"
Students identify hundreds, tens, ones
2. Mini-Lesson (10 minutes)
Model solving: 503 - 248
Decompose numbers:
503 → 500 + 0 + 3
248 → 200 + 40 + 8
Regroup tens/ones as needed
Subtract using place value
Check using addition
Teacher think-aloud emphasizes:
"I can break numbers apart."
"I can borrow from the tens or hundreds when needed."
"I can check my answer by adding back."
3. Guided Mastery Practice (10 minutes)
Students solve:
345 + 213 Lesson code M9X7
476 + 358 Lesson code IBMI
731 - 468 Lesson code 6REP
900 - 347 Lesson code RQV5
Teacher & class discussion:
"Show me the hundreds, tens, and ones."
"How do you know your answer makes sense?"
4. Mastery Practice (15 minutes)
Students complete mastery practice:
4 addition problems - Lesson code M9X7
4 subtraction problems - Lesson code 6REP
1 challenge: "Create your own 3-digit subtraction problem and solve it."
5. Exit Ticket (5 minutes)
Solve: 652 - 179
Explain: "What place value regrouping did you use?"
Support students as they work through problems by asking guiding questions, checking for understanding, and prompting them to explain their reasoning.
Support students during mastery practice
Provide targeted feedback and quick interventions to help students strengthen skills, correct misconceptions, and build confidence as they work independently.
Exit ticket explanation
Review students' exit ticket responses to determine whether they can clearly explain their thinking and apply the day's learning objective.
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