If This And That Then What? by Lyn McClure Butrick is a great book to use in the math classroom at many levels. I have used it with younger grades for logical reasoning and patterns. An example from the book: If only babies like bananas and if Felix likes bananas, then? Older students could complete the conditional statements and then find the converse, inverse, and contrapositive.
This product is also in a bundle pack at a discounted price. A great cross-curricular activity!