Корисни линкови (нижи разреди)
http://zelenaucionica.com/mislisa-i-kengur-bez-granica-testovi/
https://zvrrk.wordpress.com/2015/02/28/%D0%BE%D0%BF%D1%88%D1%82%D0%B8%D0%BD%D1%81%D0%BA%D0%BE-%D1%82%D0%B0%D0%BA%D0%BC%D0%B8%D1%87%D0%B5%D1%9A%D0%B5-%D0%B8%D0%B7-%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B5-3-%D0%B8-4/
Таблица множења – квиз