The language that is involved for communicating concepts, including math, varies by age. If a child is of a young age then using math for simple counting, cooking activities and watching natural events (such as cars passing by on a street) can help to promote simple math skills and develop language. Also, board games have a tremendous amount of math skills when a child needs to learn to count to get to a place on the board itself or "move back" (which in essence is subtraction skills).
Older students can learn more complex math skills through discussion about statistics... such as the number of women vs. men in the world. The number of hurricanes from year to year and the possible reasons why, etc. Older students are able to incorporate other fields of learning with math concepts more readily when they get to chose the topic and it is of interest. And of course, sports can be very much a part of language learning and math skills acquisition. (e.g. baseball statistics, soccer scores during tournaments, etc.)
Lastly, if your student is a "hands on " learner then nothing is better than simple tools to build a project that uses geometry skills. Not only do they need to use attending skills for the task, but writing out a plan before building is using language and math together!
Teaching students to become independent, critical thinkers is one of the primary aims of school. Open ended questions and mathematical thinking are ways of encouraging children to think deeply and critically.
Open ended questions allow students the freedom to connect ideas and form conclusions. Critical discussions in humanities classes allow students to branch off of each others ideas and form new conclusions together.