How does the bat light work?

More learning in sound and light today. We spent lots of time in the dark today!

We learned that light travels in a straight line. We also learned that light can be stopped (ABSORBED) by some materials. I.e. the bat symbol

We also learned that light can reflect off shiny surfaces and pass through some surfaces.

 

We used prisms to learn that light is made up of many colours!

Multiplying and Dividing Math

Over the last little while in math we have been working on multiplication. We first worked on strategies for multiplying single digits by single digits (e.g. 7×9). Last week, we worked a lot on various strategies for multiplying a 2-digit number by a 1-digit number (e.g. 34 x 6).

Many students today have not mastered memorizing multiplication facts, so until they do, they need some strategies to help.

We learned about many strategies including, but not limited to:
Multiplying is really repeated addition (3×6 is 6+6+6)
Multiplying is skip counting (6, 12, 18)
Stacking (what most of our moms and dads do when multiplying)
Decomposing (34 can be 30 AND 4)
Friendly TENS numbers (take away the zero, add the zero when multiplying by numbers like 40)
NEAR friendly numbers (e.g. when multiplying 39 x 7, do 40 x 7, then subtract one group of 7)
Doubling (if multiplying by 4, you can multiply by 2 first, then double it)
Finger trick for multiplying by 9
Array model

Today we began talking about division. We looked at this picture first to help us understand WHAT division is and how it is connected to multiplication.

You can help your child at home by practicing their multiplication facts until they know them by heart.

Also, help them see that division is about equal groups. We have 20 pieces of potato for dinner. If we give each of our 4 family members an equal amount, how many pieces will each person get?

Introducing our Science Unit on Sound

On Friday we experimented with making sound and tried to answer the following four questions:

1) How is sound produced?

2) How are low and high sounds made?

3) How does the shape and material of an object affect the sound it produces?

4) In what ways does sound affect our life?

At the end of the unit, we will revisit these questions.

Here’s what our room sounded like. YIKES!!!

Today we learned that sound is vibrations and that you can hear, feel, and even, see sound!

We learned new vocabulary such as vocal cords, sound waves, and molecules.

Measurement

Great job Samah and many others on a perfect measurement exit card. These will be sent home next week.

Here we are measuring different body parts. Next week we will be graphing the data we collected. We’ll also practice converted some of our measurements from centimetres (cm) to millimeters (mm), decimetres (dm), and metres (m) which we’ve been practicing with our text book work for a little while now. We are finding it tricky when decimals come into play.

Habitat Projects

Today students brought their habitat projects home. Please look for the marking rubric that is attached to their report.

It took us many days to get through all 27 presentations and me many hours to mark them all, but we are finally done! It was well worth the effort. Many of our students clearly enjoyed the hands on learning opportunity; applying what they learned about their animals habitat. As well, we learned a lot from our first big research assignment. For example, the importance of giving credit to your sources, putting ideas into your own words, gathering lots of information from multiple sources, and putting your new knowledge together in well written and organized paragraphs. Here are a few highlights:

Both Manar and Ayan did a great job taking notes when researching. Pulling just the key ideas out of a text to make point form notes is an important skill.

Adnan wrote wonderful paragraphs on the positive and negative effects that humans have on the Timber Rattlesnake. I also thought it was a nice added touch that he gave his family credit when listing his sources.

Joel constructed some well informed paragraphs, did a good job incorporating our learning about eco passages from class, and had a nicely labeled food chain.

Elora showed us how easy oral presentations can be when you do your work on Google slides.

(Waiting for shared permission so I can share her work with you here…stayed tuned to edits on this post)

And of course, all of our many amazing dioramas…It was great to see how many students remembered to show all the parts of a habitat: space, water, shelter, and a relationship with specific other animals and plants. Well done everyone. I’m sorry if I missed any. I tried to get everyone’s. If I missed yours here, let me know or send me a picture and I’ll add it in.

Picture Post Catch Up

My apologies, I thought this was posted a long time ago and just saw that it never came out of draft form.

Taste Test Tuesday’s

Seaweed

Edamame 

Grapefruit 

Pomegranate

Editing work and learning about vowel-with r words

Grade  4 CCAT testing – this is done for all grade 4 students across the province at the end of November. This test helps determine which students are deemed “gifted” and require alternate programming. We have not had the results returned to us yet.

Learning how to solve double sided equations. As well as reviewing that we don’t build both numbers when solving subtraction questions with manipulatives.

A concrete, hands-on review of why we regroup when subtracting.

Our ELL students showing courage at our monthly character traits assembly.

Our class award winners

A class shared writing activity.

Farewell Mr. Hazel! Enjoy Retirement!

Adding excitment to French lessons by looking for a coin in a cake!

Spectacular Science- Exploring Pulleys and Gears

In science, we are sometimes able to borrow fantastic learning kits from HWDSB’s Kit Services. Some of them are in hot demand across the boards schools, so we can’t always be too picky about when we get them.  This week we put our study of Habitats on hold to jump into our upcoming unit of Pulleys and Gears. These amazing LEGO kits have kept our class super engaged. Through these kits, we have explored different types of gears and pulleys. We have looked at how they make things move and how they make work easier. 

Math Test Questions

Here are some sample answers from our most recent math test. Hopefully this will help shed some light on the various strategies your child might be trying to use. Please sign and return the test if you haven’t already. I will send it home again promptly so you can use it to practice further if your wish. There will be more opportunities this term for the children to demonstrate their subtracting and problem solving skills. Your child can let me know on Monday if they feel they need to do a retest