We had a great second week in the Math Lab. We finished up our "Lewis' Mathematician" wall for lesson #2. Some students came for lesson #3 yesterday and today, everyone else will have lesson #3 on Monday or Tuesday. For lesson 3 we worked on different things according to the grade level. All grade levels did a little bit of "Number Talks".
Kindergarten- we looked at identifying numbers on dot cards and they created their own dot card to show the value of 3. We also did a couple visual problem solving problems. We sang and danced to a song to practice counting to 20 and another one to practice days of the week.
1st Grade- We looked at seeing numbers on a 5 frame. We discussed different ways to represent the same number. They also solved a couple visual problems. They each got to manipulate 5 counters to represent different basic facts that equal 5. We sang and exercised to a song where we count by fives.
2nd Grade- We took an addition pretest so that we can start working on our strategies for memorizing our addition facts next time. We watched a sing a long video on YouTube to help us learn the words addend and sum. We discussed the vocabulary words from the video. Students brainstormed a list of addition being used in the real world.
3rd Grade- We took a multiplication fact pretest so the students can see how much they grow between now and the end of the year. We learned about arrays and added the words horizontal to rows and vertical to columns. We watched a video where we saw lots of real life examples of arrays represented as repeated addition. Students made various arrays for a given number.
4th Grade & 5th Grade- We took a multiplication fact pretest so that students can track how they grow over the school year. I introduced them to the strategy of using ten facts for 5 facts. This is a great mental math strategy for bigger facts like 24X5. You can think 24X10=240 and half of 240 is 120 so 24X5 is 120.