House of Marbles Marble Reward Jar

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That’s why I think it’s so important that marbles aren’t taken out of the jar. But you can always remind them when they make a bad choice, that if they had made a different choice, they would have received a marble in the marble jar. Your child can only receive a marble if they did something because it was the right thing to do, not because they wanted a marble.

The best part is that you get to determine how many marbles your child will receive for their different positive behavior. To make the Marble Jar a useful and motivating tool, it must have meaning for the child; they must be invested in the actions and outcomes. If your Marble Jar is not working, it’s time to make adjustments. Who gets to decide what action is worthy of a marble? – An adult? Anyone in the family? The child? Or is the rule to only give marbles to others?Use the “fill” button to add marbles to the jar. Then, use the “total” button to show how many marbles are in the jar. Next, add or subtract marbles from the jar and ask students to determine the new total. This means that if the pebbles and the sand were lost, the jar would still be full and your life would still have meaning. Genetic drift has a much greater effect on the allele frequency of smaller populations. For instance if one of the brown butterflies in the population depicted died the frequency of the ''A'' (dominant) allele would change significantly. If your Marble Jar is shared among two or more children, try having the kids award each other the marbles (instead of having an adult notice the behavior and award the marble). It’s a fun way of building community and accountability, and having children encourage one another. Draw a logo with your child –Decide together what visually represents the behavior you’re targeting and create your own logo for it. Tape it to the jar.

If your child is involved in choosing the reward they are more likely going to want to reach their goal. If you are able to identify the important things in your lifeahead of time and set aside the time you need to work on them, then in the long run it is okay to procrastinate a bit on the “pebbles” or the other projects that are not as important. Every interaction with another person is either the addition of a marble(s) or the removal of them! (growth or erosion of the above attributes) Explain to your students your expectations – what type of behaviour will warrant getting marbles in the jar. Then, explain that there will be two lines on the jar – these are little reward stations. Once the class receives enough marbles to hit the first line, the whole class will receive a chosen reward. Use the “fill” button to add marbles to the jar. Ask students to estimate how many marbles there are. Then, discuss estimation strategies before showing the total and seeing which student estimated the closest number.

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Watching their little jar fill up throughout the day is half the fun and helps encourage your child to continue practicing those positive behaviors and earn rewards. I don’t remove marbles from the jar, no matter how rough a day it is. Also, you can control how many marbles go in, so that you can vaguely predict how often the jar will become full. Adding Marbles - any positive interaction is usually a marble in the jar but more obvious ones include, empathising, keeping commitments, apologising, complementing and helping. It is important to not overlook the smaller interactions such as smiling, knowing someone's name, holding a door etc as these also add marbles to the jar. The process of genetic drift can be illustrated using 20 marbles in a jar to represent 20 organisms in a population. Consider this jar of marbles as the starting population. Half of the marbles in the jar are red and half blue, and both colors correspond to two different alleles of one gene in the population. In each new generation the organisms reproduce at random. To represent this reproduction, randomly select a marble from the original jar and deposit a new marble with the same color as its "parent" into a new jar. (The selected marble remains in the original jar.) Repeat this process until there are 20 new marbles in the second jar. The second jar then contains a second generation of "offspring," consisting of 20 marbles of various colors. Unless the second jar contains exactly 10 red marbles and 10 blue marbles, a random shift occurred in the allele frequencies.