The Rekenrek (wreck in wreck) is a powerful tool that will help children learn to subitize numbers. By seeing numbers as groups rather than the result of counting single units or counting on, children are able to conceptualize groups of numbers and how they can be combined to make new numbers. The beads on the Rekenrek are grouped by fives by colour, children can see number combinations easily.
Here are some videos to help you see how using the rekenrek at school is helping your child develop number sense.
Please see the links below to online rekenreks. Both games have screenshades to hide beads so that your child can figure out how many are missing. At school we relate the rekenrek to a Double Decker Bus. Some questions to ask:
How many passengers are on the top deck?
How many seats are left on the top deck?
How many passengers are on the bottom deck?
How many seats are left on the bottom deck?
How many passengers are on the bus altogether?
How many seats are left on the double decker bus altogether?
What if a person from the top came down to the bottom? How does this change things?
Remind your child to think about the beads in groups of 5 and remind them to use“Shortcuts” to figure out their answers like the girl in the story did. Your child can also create their own math facts on paper based on different bead arrangements.
Download The Number Rack App On iPad
It is very important to your child’s number sense development that he or she learns to recognize patterns found on the 100 chart. Recognizing patterns is an essential step to understanding the number system so that he or she can be successful at addition and subtraction activities. Many kids skip this stage of learning and go right to memorizing facts (2 +2=4) and this can really hinder learning for later on! Here to two games your child can play that promote this!
Base ten blocks are a new manipulative that has been introduced in Grade One. Children in Kindergarten are very familiar with five and ten frames but the base ten blocks are brand new. During September and October children have been exploring the base ten blocks during Guided Exploration by building with them, sorting them and by counting the sections. During the month of November we have been using the Base Ten Blocks to represent the date on the calendar. Children in grade one need to learn to represent numbers to 50 using a variety of math tools (10 Frames, Base Ten Blocks, Number Lines, Coins).
Counting on is an essential skill when using base ten blocks and practising this concept is helpful. For instance you could put one of the rods (base ten block worth 10) down and then 7 of the ones and your child would say 10 then count on to 17 by counting the ones. Counting on is essentially saying the biggest number and then counting on the rest to see how many you have altogether. Children need to develop this strategy on their own and, with lots of practice counting on in different situations, they will.
Base Ten Learning Box
Base Ten Blocks & Ten Frames (And Others)
Choose: Grade one
Backgrounds: Workmats: (Hundreds, Tens, Ones)
Manipulatives:Base Ten Blocks
*lots of other options for representing number here too
Below you will find many interactive games to help your child develop the strategy of using 5 and 10 as an anchor in math. This skill along with seeing patterns in numbers on a 100 chart is the foundation of what higher level math skills are built on. Children need lots of practice using and explaining or talking about how they got their answers.
Five Frame Game
Ten Frame Game
Guess The Number
Variety Of Manipulatives and Work Mats Can Be Played With
Base Ten Block Fun
Base Ten Blocks
(under activities choose compare in order to compare two different numbers)
Help BT Bear Catch 10 Blocks
At school have been using a 10 Frame as a tool for representing numbers. Please take some time to watch the first video as it explains the concept of a 10 Frame for parents. The last 2 videos are games to play. As your child gets better at understanding numbers represented on the 10 Frame he or she will be able to get more of the answers correct in the game videos without having to count each section of the 10 Frame.
Looking for something educational for your child to do on the computer while you make dinner? The link below is for a very popular site many of the children have used before. There is a grade one section at the top right and there are links to many different games and activities directly linked to the curriculum. Check it out with your child to help him/her consolidate the learning that they are doing at school.