Week 2 Shirley's Blog

Lab: First of all, we talked about syllabus of the class this semesters and how the quiz going. Then we talked about why should elementary students learn about science? And Kids in races with different speeds which is a big question in this week.

We do the race between me and another person to walk and "run" in 6 meters and 10 meters, then record the time to compare with each other. To see what speed it is. The race between with the other group in the whole class.

Lecture: We talked about Motion, We check on NGSS PE 3-PS2-2 to see where did we do the SEPs, What DCI ideas did you need, and How did you use CCCs.

And learned How to measure the motion by:

Speed=Distance/time

Here are some Key Takeaways from the class: Kids should explore describe and predict motion by: 

• Designing investigations to collect data about motion 

• Identify and describe patterns in data 

• Measure key characteristics of motion like position and speed 

• In order to communicate clearly about motion, we need standard units 

• Speed measures how far something moves in a certain time 

• Position gives the location of an object relative to some reference point 

• Measuring the position and motion of an object allows us to predict where it will be in the future.

Pressbook: 

Describing and Measuring Motion

Two additional Benefits:

1.  Predicting where something will be in the future

    We can describe motion, the more precisely we can where it will be in the future.

2. Knowing whether we understand what we observe happening 

Precise description of motion can let us know whether we understand what is going on in the world around us or whether there is something more to know.

How can we know the motion?

First, the position and direction. Direction from a reference point, we must travel from reference point to get where we are.

We usually use feet , inch and miles for distance unit. But for directions we usually use how many degrees you turn from a standard direction.

Then is speed, it is a way to see how quickly we move is to do in terms of how long it takes us to move a set of time.

How fast something moves (a scalar quantity)How fast and in what direction something moves ( a vector quantity)

Changes in motion:

Measures how fast velocity changes