# Summer SAVY 2022/Session 1 – Secrets of the MoliStone for Rising 3rd/4th Grade

Posted by on Monday, June 13, 2022 in blog, SAVY.

Friday:What a week! In “The Secrets of the MoLi Stone” this week we studied four different number systems, traveled to three different countries, completed two escape rooms, and created our own number system! Today we wrapped everything up by finishing our projects and presenting them to some Vanderbilt faculty! The students loved presenting their hard work. I encourage you to have them present them at home this weekend! Here was their assignment:

“The number system we use today was invented by the Hindus in India thousands of years ago and was brought to Europe around the year 900 by Arab traders.  It is a place value system that is built on base 10. In this system, numbers are written with ten digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. However, in ancient times there was no single number system used all over the world.  We have explored other number systems in class this week:  Egyptian, Chinese, and Base 3.  How do they compare and contrast to the Hindu-Arabic Number system we use today?  Are they based on base 10, 5, 12, 60 or another number?  What do they use for their symbols?  Do they use place value or is order not important?  How do they perform different operations such as addition or subtraction?  You will work over the next two days to develop your own unique number system with unique patterns, groupings, and symbols. You will present it to both classmates and Vanderbilt faculty as well as a create a MoLi Stone for other students to solve! This is your last challenge to finally return home!”

The students were able to listen in on one another’s presentations, sharing thoughts, questions, and any other positive feedback. Here are some questions you can ask your child to learn more about their system!

1. What is the name of your number system? How did you come up with this idea?
2. What patterns can be seen in your system?
3. How are numbers grouped in your system?
4. Explain the symbols in your system.
5. Try to figure out your students MoLi Stone using the information on their poster!

Be sure to ask them to perform their magic trick as well!

It was wonderful to meet so many bright young scholars this week! Teaching a child is a team effort, and it is because of you and your dedication to their education that they are so successful! I hope to see everyone in another SAVY session this summer!

Thursday: We solved the MoLi Stone mystery!!! All week our mathematicians analyzed patterns, groupings, and symbols of multiple number systems to ultimately decipher what the mysterious symbols meant on this stone. Students were given expectations for their final project, and we reflected on the entire session by playing a numeration based Scattegories. This helped students think about what they wanted to include or not include in their original number system.

Creating a new number system was one of the most fun yet challenging activities we did this session.

“What do all numeration systems have in common?”

“Why do we have exactly 10 symbols?”

“How did the Chinese create symbols beyond the symbol for 10?”

“How are the Egyptian symbols related to one another?”

By asking these questions and thinking critically about the parts and rules of each system, students developed their own number system. Many students loved working in base three and decided to create a system in another base. Several students kept with base ten but created symbols that represented things they liked such as baseball, animals, and shapes! What really challenged students’ thinking was that number systems are not just about fun and random symbols for each number but recognizing there was a relationship between the symbol and the value. Students beamed with pride as they wrote their symbols on their own MoLi Stone for friends and parents to solve tomorrow! Students will finish and present their tri-folds tomorrow afternoon. I cannot wait for them to share them at home after camp tomorrow!

In the afternoon we prepared for our Friday magic show! I don’t think students ever thought numbers could be involved in magic tricks! Each group learn and prepared a numical magic trick that they will teach the class tomorrow. After hearing how much students enjoyed doing an escape room yesterday, we decided to do one more about the Ancient Chinese Civilization. These escape rooms not only cause students to be strategic, but provide a better understanding of the cultures we have learned about this week as well!