Students have been very busy this week as they began to review their strategies for addition. We moved passed our three-digit addition into the Grade four realm of 4 digits. Students are consistently adding up to almost 10, 000. We reviewed two new concepts building off of using base ten. The strategy we practiced for many days looks like:
This strategy works through each place value system starting with:
5 000+ 1 1000=6000
They then find the sum of all these numbers. This strategy is longer than the traditional algorithm, however it saves all the regrouping to the end so they do not get confused.
On Monday the students have a four-question addition check in. They can choose ANY strategy for adding as long as they can show their thinking.
They can get practice from the following links:
Family Dice game dedicated to adding BIG numbers
Students really worked to understand the difference between light sources and reflections of light. Students became quite capable understanding where the sources of light came from and how many reflections were involved.
The moon’s reflection on the lake
-Starts with the sun reflecting off the moon
-The moon reflects the light to the lake
-The lake reflects the light again
Students also had to generate lists of light sources:
Can you name 6 different light sources?
What if we didn’t have electricity how many can be named?
Next week students will be learning more about shadows and the way light travels in our world. Reading these articles will help you further understand the impact light has on our world.