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What Made the Giraffe Decide to be Tall?

3rd Grade Science » Unit: Amazing Animals - Surviving a Changing Environment
Big Idea: Sometimes, the same species traits that provide an animal with some advantages in its environment can simultaneously put the animal at a disadvantage.
 
 
195 teachers viewed a Reflection
 

Models, drawings, symbols, pictures. What do these words mean?

The purpose of this reflection is to clarify what I mean when I use the terms model, drawing, symbols, and pictures.  I use these words frequently in my lessons, as well as with my students.

Model- a model can be a physical representation using manipulatives or a drawing of what this representation would look like 

Drawing- shows a mathematical concept (not in the way an artist would) in a simple picture that usually represents models using manipulatives. 

Symbols- numbers, variables, and signs (operations) usually in the form of an equation or expression.

Pictures- students are encouraged to use mathematical drawings rather than pictures (the way an artist might draw something)  because they are more efficient. However, it is important to allow students the option of drawing a picture when they need it to help make sense of a problem.

 

When working with fractions, I will steer my students away from modeling fractions with circles.  Fraction bars (tiles) and number lines are much more helpful for the students because fractions have to show equal parts.  Often students have a hard time breaking circles up appropriately if it is a more challenging denominator (anything over 12, odd numbers etc).  

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Exploring Equivalence

5th Grade Math » Unit: Adding and Subtracting Fractions
 
12 teachers viewed a Lesson

What Does the Walrus Do When the Ice Is Gone?

3rd Grade Science » Unit: Amazing Animals - Surviving a Changing Environment
Big Idea: Sometimes animals respond to a changing environment with a behavior that doesn't help them.
 
Heather Sparks added a Video
 

Justification for square root practice.MOV

Playing Around with Pythagoras-Day 2

8th Grade Math » Unit: Playing Around with Pythagoras
Big Idea: Simple, whole number computations to determine the missing lengths of the hypotenuse of given triangles helps students gain confidence in applying the Pythagorean Theorem.
 
Colleen Werner added a Video
 

Foreshadowing Logarithms

Geometric Series

Algebra II » Unit: Sequences and Series
Big Idea: The first proof in Algebra 2! Students learn to derive the formula for the sum of the first n terms of a finite geometric sequence.
 
 
408 teachers viewed a Lesson

Violence & Video Games, The Debate

6th Grade ELA » Unit: Pick a Side! Prove Your Point!
Big Idea: What makes great argument writing? Part of it is having an opinion and finding your voice. This is done through oral argument.
 
 
699 teachers viewed a Lesson

The Legend of King Arthur Day 1 of 3 - Independent Reading

12th Grade ELA » Unit: The King Arthur Legend
Big Idea: “Our own heart, and not other men's opinions, forms our true honor.” ― Samuel Taylor Coleridge
 
 
898 teachers viewed a Lesson

Skip Counting with 5s, 10s and 100s

2nd Grade Math » Unit: Adding and Subtracting the Basics
Big Idea: In preparation for multiplication, the Common Core Standards require 2nd grade students fluently skip count by 5’s, 10’s and 100’s.
 
 
161 teachers viewed a Lesson

Subtracting Whole Numbers

4th Grade Math » Unit: Adding and Subtracting Whole Numbers
Big Idea: Using place value helps make subtracting easier.
 
 
512 teachers viewed a Lesson

Note Taking

2nd Grade ELA » Unit: Shared Inquiry Discussion
Big Idea: Students learn to focus on details while analyzing text.
 
 
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