Monday, November 18, 2013

Equivalent Fractions

MCC4.NF.1 Explain why a fraction a/b is equivalent to a fraction (n × a)/(n × b) by using visual fraction models, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size. Use this principle to recognize and generate equivalent fractions.

How can we find equivalent fractions? 

* Using number lines
Video demonstrating how to use number lines to find equivalent fractions. 

*Using visual Models 
Find an equivalent fraction to 1/4.
The denominator (4) tells you how many pieces to circle in each group.
The numerator (1) tells you how many pieces to shade in each group.
In the shape below, you would circle groups of 4. This will give you 4 groups. You will then shade 1 out of each group. You will have a total of 3 shaded, because you have three groups. That makes your equivalent fraction 3/12.

* Multiplying across 
Equivalent Fractions MUST be Fair!!! 
Whatever you do to the numerator, you must do to the denominator. 

3  =   9
4        ?
You multiply 3 by 3 to get 9. Since you multiplied the numerator by 3, you must multiply the denominator by 3 as well. 4 x 3 = 12. So the new denominator will be 12. Your equivalent fractions are 3/4 and 9/12. 

*Check your work by cross multiplying.
Studyjams video on equivalent fractions
Triplets game from Math playground
Matching equivalent fractions
Fraction game
Equivalent Fractions Quiz
Creating Equivalent Fractions
Fraction dolphin game 

Force and Motion

S4P3. Students will demonstrate the relationship between the application of a force and the resulting change in position and motion on an object.
a. Identify simple machines and explain their uses (lever, pulley, wedge, inclined plane, screw, wheel and axle).
b. Using different size objects, observe how force affects speed and motion.
c. Explain what happens to the speed or direction of an object when a greater force than

the initial one is applied.
d. Demonstrate the effect of gravitational force on the motion of an object. 

Force and Motion Video from StudyJams
Slide Show on Simple Machines from StudyJams
Inertia Video from StudyJams
Acceleration Video StudyJams
Forces in Action Game
Motion Games
Tim and Moby Force Video
A list of several different games involving force and motion
Simple Machines game at EdHeads
Free Force and Motion Flashcards

Monday, November 11, 2013

Water Cycle and Weather

Water Cycle and Weather 

We will be taking our second Science CDA this Friday. The students are required to know the standards listed below.

S4E3. Students will differentiate between the states of water and how they relate to the water cycle and weather.
  1. Demonstratehowwaterchangesstatesfromsolid(ice)toliquid(water)togas(water vapor/steam) and changes from gas to liquid to solid.
  2. Identify the temperatures at which water becomes a solid and at which water becomes a gas.
  3. Investigatehowcloudsareformed.
  4. Explain the water cycle (evaporation, condensation, and precipitation).
  5. Investigate different forms of precipitation and sky conditions. (rain, snow, sleet, hail,
    clouds, and fog).
S4E4. Students will analyze weather charts/maps and collect weather data to predict weather events and infer patterns and seasonal changes.
a. Identifyweatherinstrumentsandexplainhoweachisusedingatheringweatherdata and making forecasts (thermometer, rain gauge, barometer, wind vane, anemometer).
b. Using a weather map, identify the fronts, temperature, and precipitation and use the information to interpret the weather conditions.
c. Useobservationsandrecordsofweatherconditionstopredictweatherpatterns throughout the year.
d. Differentiate between weather and climate. 

Below are a few resources to enjoy! 

Study Jams
The above link will take you to Studyjams. This is an excellent resource to use. It includes a short video and a comprehension question at the end. Click on Science, See All Topics, Weather and Climate. Then choose the video of your choice.

The above link with take you to Edheads. There is a fun game that will help you practice predicting weather.

Water Cycle Song
We have practiced the above song in class many times. It goes through the entire water cycle.

Weather Watch Activities

Make your own weather instruments
The link listed above will show you how to make your own weather instruments. This is an awesome way to help make a connection with what you are learning. If you decide to do this at home, please let me know. I would love to see pictures and hear how it turns out!

Another great way to help your child develop a better understanding of weather is by watching the weather channel together.