It shows simple counting-and-addition problems illustrated with strawberries, bananas, grapes and oranges.

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We made the journey in three 4x4 Unicef vehicles bumping along the red dirt roads through the lush green tropical landscape - trees packed with bananas, oranges and lemons.

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And, as generations of children can attest, parents are constantly trying to offer up healthy snacks such as bananas, raisins, oranges and pretzels, but to the die-hard candy user, this stuff is near beer.

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The harvest season (from March until October) brings an abundance of mangoes, melons, strawberries, green oranges and small sweet bananas from mountain farms.

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Whatever the veracity of these claims, the tasty little leaves are unquestionably a superfood: Gram for gram, watercress contains more vitamin C than oranges do, more calcium than milk, more iron than spinach and more folate than bananas.

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